{"id":253,"date":"2023-06-23T06:39:35","date_gmt":"2023-06-23T06:39:35","guid":{"rendered":"https:\/\/physigeek.com\/ja\/%e5%82%be%e6%96%9c%e9%9d%a2\/"},"modified":"2023-06-23T06:39:35","modified_gmt":"2023-06-23T06:39:35","slug":"%e5%82%be%e6%96%9c%e9%9d%a2","status":"publish","type":"post","link":"https:\/\/physigeek.com\/ja\/%e5%82%be%e6%96%9c%e9%9d%a2\/","title":{"rendered":"\u50be\u659c\u9762"},"content":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u7269\u7406\u5b66\u306b\u304a\u3051\u308b\u50be\u659c\u9762\u3068\u306f\u4f55\u304b\u3001\u307e\u305f\u3053\u306e\u7a2e\u306e\u554f\u984c\u3092\u3069\u306e\u3088\u3046\u306b\u89e3\u6c7a\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u50be\u659c\u9762\u306b\u4f5c\u7528\u3059\u308b\u529b\u306e\u516c\u5f0f\u304c\u308f\u304b\u308a\u3001\u3055\u3089\u306b\u50be\u659c\u9762\u3067\u6bb5\u968e\u7684\u306b\u89e3\u304f\u6f14\u7fd2\u3067\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-un-plano-inclinado\"><\/span>\u50be\u659c\u9762\u3068\u306f\u4f55\u3067\u3059\u304b?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>\u50be\u659c\u9762\u3068<\/strong>\u306f\u3001\u3042\u308b\u89d2\u5ea6\u3060\u3051\u50be\u3044\u305f\u9762\u306e\u3053\u3068\u3067\u3059\u3002\u7269\u7406\u5b66\u3067\u306f\u3001\u50be\u659c\u9762\u306f\u5f37\u5ea6\u306e\u554f\u984c\u3092\u7df4\u7fd2\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u30b9\u30ed\u30fc\u30d7\u3084\u5742\u9053\u306f\u50be\u659c\u9762\u3067\u3059\u3002<\/p>\n<p>\u50be\u659c\u9762\u306b\u3088\u308a\u3001\u3088\u308a\u5c11\u306a\u3044\u529b\u3067\u7269\u4f53\u3092\u642c\u9001\u3067\u304d\u307e\u3059\u3002\u50be\u659c\u9762\u4e0a\u3067\u7269\u4f53\u3092\u62bc\u3059\u3053\u3068\u306f\u3001\u7269\u4f53\u3092\u5782\u76f4\u306b\u6301\u3061\u4e0a\u3052\u308b\u3088\u308a\u3082\u5c11\u306a\u3044\u529b\u3067\u6e08\u3080\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30a4\u30f3\u30af\u30e9\u30a4\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u306f 6 \u3064\u306e\u53e4\u5178\u7684\u306a\u5358\u7d14\u306a\u6a5f\u68b0\u306e 1 \u3064\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Formulas-del-plano-inclinado\"><\/span>\u50be\u659c\u9762\u306e\u516c\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u50be\u659c\u9762\u306e\u5b9a\u7fa9\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u50be\u659c\u9762\u306b\u3069\u306e\u3088\u3046\u306a\u5f0f\u304c\u4f5c\u7528\u3059\u308b\u306e\u304b\u3001\u307e\u305f\u305d\u308c\u3089\u3092\u7d50\u3073\u4ed8\u3051\u308b\u65b9\u7a0b\u5f0f\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u50be\u659c\u9762\u306e\u6f14\u7fd2\u3067\u906d\u9047\u3059\u308b\u6700\u521d\u306e\u554f\u984c\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u529b\u304c\u50be\u659c\u9762\u306b\u5e73\u884c\u307e\u305f\u306f\u5782\u76f4\u306e\u65b9\u5411\u306b\u4f5c\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4e00\u822c\u7684\u306a\u5ea7\u6a19\u8ef8 (1 \u3064\u306e\u5782\u76f4\u8ef8\u3068 1 \u3064\u306e\u6c34\u5e73\u8ef8) \u306f\u3001\u3053\u306e\u7a2e\u306e\u554f\u984c\u306b\u306f\u3042\u307e\u308a\u5f79\u306b\u7acb\u3061\u307e\u305b\u3093\u3002\u4e00\u822c\u306b\u3001\u50be\u659c\u9762\u3067\u306f\u5225\u306e\u5ea7\u6a19\u7cfb\u3092\u4f7f\u7528\u3059\u308b\u306e\u306f\u3053\u306e\u305f\u3081\u3067\u3059\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/plan-incline.png\" alt=\"\u50be\u659c\u9762\" class=\"wp-image-4369\" width=\"391\" height=\"368\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/plan-incline-300x283.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/plan-incline-768x724.png 768w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/plan-incline.png 1010w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p><strong>\u7269\u7406\u5b66\u3067\u306f\u3001\u50be\u659c\u9762\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u30012 \u3064\u306e\u7570\u306a\u308b\u8ef8\u3092\u4f7f\u7528\u3057\u307e\u3059\u30021<\/strong>\u756a\u76ee\u306e\u8ef8\u306e\u65b9\u5411\u306f\u50be\u659c\u9762\u306b\u5e73\u884c\u3067\u30012 \u756a\u76ee\u306e\u8ef8\u306e\u65b9\u5411\u306f\u50be\u659c\u9762\u306b\u5782\u76f4\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u753b\u50cf\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001<strong>\u50be\u659c\u9762\u306b\u306f\u4e00\u822c\u306b (\u6469\u64e6\u304c\u3042\u308b\u5834\u5408) \u91cd\u529b\u3001\u5782\u76f4\u529b\u3001\u6469\u64e6\u529b (\u307e\u305f\u306f\u6469\u64e6\u529b) \u306e 3 \u3064\u306e\u7570\u306a\u308b\u529b\u304c\u4f5c\u7528\u3057\u307e\u3059<\/strong>\u3002\u3057\u304b\u3057\u3001\u8ad6\u7406\u7684\u306b\u306f\u3001\u659c\u9762\u306b\u6469\u64e6\u304c\u306a\u3051\u308c\u3070\u3001\u6469\u64e6\u529b\u306f\u7121\u8996\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u304a\u3082\u308a\u306e\u529b\u306f\u30d9\u30af\u30c8\u30eb\u7684\u306b\u306f\u50be\u659c\u9762\u306b\u5e73\u884c\u306a\u6210\u5206\u3068\u50be\u659c\u9762\u306b\u5782\u76f4\u306a\u6210\u5206\u306e\uff12\u6210\u5206\u306b\u5206\u89e3\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u529b\u3092\u50be\u659c\u9762\u306e\u4f5c\u7528\u8ef8\u3067\u8868\u73fe\u3067\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u50be\u659c\u9762\u4e0a\u306b\u3042\u308b\u7269\u4f53\u306e\u91cd\u91cf\u306e 2 \u3064\u306e\u6210\u5206\u306f\u3001\u50be\u659c\u89d2\u306e\u30b5\u30a4\u30f3\u3068\u30b3\u30b5\u30a4\u30f3\u306b\u3088\u3063\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-a26edbf89d563f1351d0ec9771f7e7bc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1=m\\cdot g\\cdot \\text{sen}(\\alpha)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"142\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-f5f191747feef04cf0a63f61a6b56cfd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_2=m\\cdot g\\cdot \\text{cos}(\\alpha)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"141\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u6700\u5f8c\u306b\u3001\u50be\u659c\u9762\u306b\u4f5c\u7528\u3059\u308b\u529b\u306f\u3001\u6b21\u306e 2 \u3064\u306e\u5f0f\u3067\u95a2\u4fc2\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formules-du-plan-incline.png\" alt=\"\u50be\u659c\u9762\u306e\u516c\u5f0f\" class=\"wp-image-4388\" width=\"491\" height=\"151\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formules-du-plan-incline-300x93.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formules-du-plan-incline-768x237.png 768w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formules-du-plan-incline.png 1022w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p>\u554f\u984c\u6587\u306b\u5225\u306e\u8a18\u8f09\u304c\u306a\u3044\u5834\u5408\u3001\u50be\u659c\u9762\u4e0a\u306e\u7269\u4f53\u304c\u659c\u9762\u3092\u6ed1\u308a\u843d\u3061\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u305f\u3081\u3001\u8003\u3048\u3089\u308c\u308b\u52a0\u901f\u5ea6\u304c\u9762\u306b\u5e73\u884c\u306a\u8ef8\u306e\u65b9\u7a0b\u5f0f\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9\u3001\u7269\u4f53\u306f\u50be\u659c\u9762\u306b\u5782\u76f4\u306a\u8ef8\u65b9\u5411\u306b\u306f\u79fb\u52d5\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u529b\u306e\u548c\u306f\u30bc\u30ed\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplo-resuelto-del-plano-inclinado\"><\/span>\u50be\u659c\u9762\u306e\u89e3\u6c7a\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u50be\u659c\u9762\u306e\u554f\u984c\u304c\u7269\u7406\u5b66\u3067\u3069\u306e\u3088\u3046\u306b\u89e3\u6c7a\u3055\u308c\u308b\u304b\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u4ee5\u4e0b\u306b\u6bb5\u968e\u7684\u306a\u89e3\u6c7a\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u8cea\u91cf m=6 kg \u306e\u7269\u4f53\u3092 45 \u5ea6\u50be\u659c\u3057\u305f\u5e73\u9762\u306e\u4e0a\u90e8\u306b\u7f6e\u304d\u307e\u3059\u3002\u7269\u4f53\u304c\u52a0\u901f\u5ea6 4 m\/s <sup>2<\/sup>\u3067\u659c\u9762\u4e0a\u3092\u6ed1\u308b\u5834\u5408\u3001\u659c\u9762\u306e\u8868\u9762\u3068\u7269\u4f53\u306e\u8868\u9762\u3068\u306e\u9593\u306e\u52d5\u6469\u64e6\u4fc2\u6570\u306f\u3044\u304f\u3089\u3067\u3059\u304b?\u30c7\u30fc\u30bf: g=10 m\/s <sup>2<\/sup> \u3002 <\/li>\n<\/ul>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-resolu-coefficient-de-frottement-dynamique.png\" alt=\"\u6469\u64e6\u4fc2\u6570\u3084\u52d5\u6469\u64e6\u306e\u554f\u984c\" class=\"wp-image-4281\" width=\"203\" height=\"205\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-resolu-coefficient-de-frottement-dynamique-298x300.png 298w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-resolu-coefficient-de-frottement-dynamique-150x150.png 150w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-resolu-coefficient-de-frottement-dynamique.png 479w\" sizes=\"auto, (max-width: 298px) 100vw, 298px\"><\/figure>\n<p class=\"has-text-align-left\">\u529b\u5b66\u306b\u95a2\u3059\u308b\u7269\u7406\u5b66\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u6700\u521d\u306b\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b\u306e\u306f\u3001\u81ea\u7531\u4f53\u56f3\u3092\u63cf\u304f\u3053\u3068\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u4f5c\u7528\u3059\u308b\u3059\u3079\u3066\u306e\u529b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-force-de-friction-dynamique.png\" alt=\"\u6469\u64e6\u4fc2\u6570\u307e\u305f\u306f\u52d5\u6469\u64e6\u306e\u8a08\u7b97\u3092\u89e3\u304f\" class=\"wp-image-4282\" width=\"248\" height=\"301\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-force-de-friction-dynamique-247x300.png 247w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-force-de-friction-dynamique.png 572w\" sizes=\"auto, (max-width: 247px) 100vw, 247px\"><\/figure>\n<p class=\"has-text-align-left\">\u8ef8 1 (\u50be\u659c\u9762\u306b\u5e73\u884c) \u306e\u65b9\u5411\u3067\u306f\u7269\u4f53\u306f\u52a0\u901f\u5ea6\u3092\u6301\u3061\u307e\u3059\u304c\u3001\u8ef8 2 (\u50be\u659c\u9762\u306b\u5782\u76f4) \u306e\u65b9\u5411\u3067\u306f\u7269\u4f53\u306f\u9759\u6b62\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u304b\u3089\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u529b\u306e\u65b9\u7a0b\u5f0f\u3092\u78ba\u7acb\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-d87a1ef6aaa3476891df5da8334cbc49_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1-F_R=m\\cdot a\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"124\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-6bdf90ed250934bf6cffbb110bc792a4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_2-N=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"90\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u30012 \u756a\u76ee\u306e\u65b9\u7a0b\u5f0f\u304b\u3089\u5782\u76f4\u6297\u529b\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-59341555fe3d5fe315ceb1864547873b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}N=P_2\\\\[3ex]N=m\\cdot g\\cdot \\text{cos}(\\alpha) \\\\[3ex] N=6 \\cdot 10 \\cdot \\ text{cos}(45\u00ba)\\\\[3ex]N=42,43 \\ N\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"151\" width=\"185\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u4e00\u65b9\u3001\u63d0\u793a\u3055\u308c\u305f\u6700\u521d\u306e\u65b9\u7a0b\u5f0f\u304b\u3089\u6469\u64e6\u529b (\u307e\u305f\u306f\u6469\u64e6\u529b) \u306e\u5024\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-d8f2aff2a81d98ddcea04b1988282fda_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}P_1-F_R=m\\cdot a\\\\[3ex]F_R=P_1-m\\cdot a\\\\[3ex]F_R=m\\cdot g\\cdot \\text{sin} (\\alpha)-m\\cdot a\\\\[3ex]F_R=6\\cdot 10\\cdot \\text{sin}(45\u00ba)-6\\cdot 4\\\\[3ex]F_R=18.43 \\ N\\end{ array} \" title=\"Rendered by QuickLaTeX.com\" height=\"195\" width=\"204\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u5782\u76f4\u6297\u529b\u3068\u6469\u64e6\u529b\u306e\u5024\u304c\u308f\u304b\u308c\u3070\u3001\u5bfe\u5fdc\u3059\u308b\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u52d5\u6469\u64e6\u4fc2\u6570\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-b783c9e37bcf4d077d9496489fc5d7d6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\mu_d=\\cfrac{F_R}{N}=\\cfrac{18.43}{43.43}=0.42\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"187\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicios-resueltos-del-plano-inclinado\"><\/span>\u50be\u659c\u9762\u3067\u89e3\u304f\u6f14\u7fd2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 1<\/h3>\n<p>\u8cea\u91cf m=2 kg \u306e\u7269\u4f53\u3092\u50be\u659c\u89d2 30 \u5ea6\u306e\u50be\u659c\u9762\u306e\u9802\u4e0a\u306b\u7f6e\u304d\u307e\u3059\u3002\u30e9\u30f3\u30d7\u3068\u672c\u4f53\u304c\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u5834\u5408\u3001\u305d\u306e\u9593\u306e\u6469\u64e6\u4fc2\u6570\u306f\u3044\u304f\u3089\u3067\u3059\u304b?\u30c7\u30fc\u30bf: g=9.81 m\/s <sup>2<\/sup> <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-force-normale-et-de-force-de-friction.png\" alt=\"\" class=\"wp-image-4253\" width=\"285\" height=\"176\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-force-normale-et-de-force-de-friction-300x185.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-force-normale-et-de-force-de-friction.png 702w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__FFF8E1\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#FFF8E1\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u529b\u3092\u4f34\u3046\u4ed6\u306e\u7269\u7406\u554f\u984c\u3068\u540c\u69d8\u306b\u3001\u6700\u521d\u306b\u884c\u3046\u3053\u3068\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u81ea\u7531\u4f53\u56f3\u3092\u63cf\u304f\u3053\u3068\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u4f5c\u7528\u3059\u308b\u3059\u3079\u3066\u306e\u529b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-force-normale-et-friction-force.png\" alt=\"\u5782\u76f4\u6297\u529b\u3068\u6469\u64e6\u529b\u306e\u4f5c\u7528\u3092\u89e3\u6c7a\u3059\u308b\" class=\"wp-image-4254\" width=\"285\" height=\"333\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-force-normale-et-friction-force-256x300.png 256w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-force-normale-et-friction-force.png 702w\" sizes=\"auto, (max-width: 256px) 100vw, 256px\"><\/figure>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u305f\u3081\u306b\u306f\u3001\u8ef8 1 \u3068\u8ef8 2 \u306b\u304b\u304b\u308b\u529b\u306e\u5408\u8a08\u304c\u30bc\u30ed\u306b\u7b49\u3057\u304f\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u6b21\u306e\u65b9\u7a0b\u5f0f\u304c\u6210\u308a\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-a692b08b4d7c08a2c55556233dc56651_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_R=P_1\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"63\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-ea3f790cf878ca23f77405f73a20e7c6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"N=P_2\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"58\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3053\u308c\u3067\u30012 \u756a\u76ee\u306e\u65b9\u7a0b\u5f0f\u304b\u3089\u5782\u76f4\u6297\u529b\u306e\u5024\u3092\u8a08\u7b97\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-780db8c589b96d398e1400444a11db30_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}N=P_2\\\\[3ex]N=P\\cdot \\text{cos}(\\alpha)\\\\[3ex]N=m \\cdot g\\cdot \\text{cos }(\\alpha)\\\\[3ex]N=2 \\cdot 9,81 \\cdot \\text{cos}(30\\text{\u00ba})\\\\[3ex]N=16,99 \\ N\\end{array} \" title=\"Rendered by QuickLaTeX.com\" height=\"196\" width=\"171\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u4e00\u65b9\u3001\u6700\u521d\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u6469\u64e6\u529b\u306e\u5024\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-bef5af0f3a7e907aa90f08435f538cf7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}F_R=P_1\\\\[3ex]N=P\\cdot \\text{sin}(\\alpha)\\\\[3ex]F_R=m \\cdot g\\cdot \\text{sin }(\\alpha)\\\\[3ex]F_R=2 \\cdot 9,81 \\cdot \\text{sin}(30\\text{\u00ba})\\\\[3ex]F_R=9,81 \\ N\\end{array} \" title=\"Rendered by QuickLaTeX.com\" height=\"196\" width=\"175\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u540c\u69d8\u306b\u3001\u6b21\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u6469\u64e6\u529b\u3092\u5782\u76f4\u6297\u529b\u304a\u3088\u3073\u6469\u64e6\u4fc2\u6570\u306b\u95a2\u9023\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-b8e2dc6a1180d664163aeb969b289073_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_R=\\mu \\cdot N\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"86\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u3057\u305f\u304c\u3063\u3066\u3001\u65b9\u7a0b\u5f0f\u304b\u3089\u6469\u64e6\u4fc2\u6570\u3092\u89e3\u304d\u3001\u305d\u306e\u5024\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-2bee3710c7506bf8ff2456662a57f279_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\mu=\\cfrac{F_R}{N}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"59\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-69da73a9c8ca8ef047563bcb0b957d4b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\mu=\\cfrac{9,81}{16,99}\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"80\" style=\"vertical-align: -16px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-87da99c1b6541f3ad374e4ebb3e9daf1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{\\mu=0.58}\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"66\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 2<\/h3>\n<p>\u50be\u659c\u9762\u3068\u6ed1\u8eca\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u305f\u6b21\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u308f\u304b\u308b\u3088\u3046\u306b\u30012 \u3064\u306e\u7269\u4f53\u306f\u30ed\u30fc\u30d7\u3068\u7121\u8996\u3067\u304d\u308b\u8cea\u91cf\u306e\u6ed1\u8eca\u306b\u3088\u3063\u3066\u63a5\u7d9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7269\u4f53 2 \u306e\u8cea\u91cf m <sub>2<\/sub> = 7 kg \u3067\u3001\u30e9\u30f3\u30d7\u306e\u50be\u659c\u304c 50\u00b0\u3067\u3042\u308b\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u304c\u5e73\u8861\u72b6\u614b\u306b\u306a\u308b\u3088\u3046\u306b\u3001\u50be\u659c\u9762\u304c\u8cea\u91cf m <sub>1<\/sub>\u306e\u7269\u4f53\u306b\u53ca\u307c\u3059\u5782\u76f4\u6297\u529b\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\u904b\u52d5\u4e2d\u306f\u6469\u64e6\u529b\u3092\u7121\u8996\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-dequilibre-des-forces.png\" alt=\"\u4e26\u9032\u5e73\u8861\u554f\u984c\" class=\"wp-image-295\" width=\"299\" height=\"240\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-dequilibre-des-forces-300x241.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-dequilibre-des-forces.png 718w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__FFF8E1\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#FFF8E1\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u30dc\u30c7\u30a3 1 \u306f\u50be\u659c\u3057\u305f\u659c\u9762\u4e0a\u306b\u3042\u308b\u305f\u3081\u3001\u6700\u521d\u306b\u884c\u3046\u3053\u3068\u306f\u3001\u305d\u306e\u91cd\u91cf\u306e\u529b\u3092\u30d9\u30af\u30c8\u30eb\u5316\u3057\u3066\u659c\u9762\u306e\u8ef8\u306b\u529b\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u3067\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-c05811c44aa2d58295c811d612a54eee_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_{1x}=P_1\\cdot \\text{sin}(\\alpha)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"128\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-1a0b77602980cc17cce9b3baef744df8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_{1y}=P_1\\cdot \\text{cos}(\\alpha)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"130\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306b\u4f5c\u7528\u3059\u308b\u4e00\u9023\u306e\u529b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-equilibre-des-forces.png\" alt=\"\u4e26\u9032\u30d0\u30e9\u30f3\u30b9\u6f14\u7fd2\u304c\u89e3\u6c7a\u3055\u308c\u307e\u3057\u305f\" class=\"wp-image-296\" width=\"338\" height=\"272\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-equilibre-des-forces-300x241.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-equilibre-des-forces.png 718w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p class=\"has-text-align-left\">\u554f\u984c\u6587\u306f\u3001\u529b\u306e\u7cfb\u304c\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u305f\u3081\u30012 \u3064\u306e\u7269\u4f53\u306f\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u304b\u3089\u30012 \u3064\u306e\u7269\u4f53\u306e\u5e73\u8861\u65b9\u7a0b\u5f0f\u3092\u63d0\u6848\u3067\u304d\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-b62bbb21cbec2be0bba7f8a839b12ba9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"1\\ \\rightarrow \\ \\begin{cases}P_{1x}=T\\\\[2ex]P_{1y}=N\\end{cases} \\qquad\\qquad 2 \\ \\rightarrow \\ T=P_2[\/latex ] Par cons\u00e9quent, la composante vectorielle du poids du corps 1 inclin\u00e9 dans le sens de la pente doit \u00eatre \u00e9gale au poids de l'objet 2. [latex]P_{1x}=P_2\" title=\"Rendered by QuickLaTeX.com\" height=\"83\" width=\"1404\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-4e1b75b6ba5d7bbe88d23e014eb011c5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1\\cdot \\text{sin}(\\alpha)=P_2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"120\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u524d\u306e\u5f0f\u304b\u3089\u3001\u7269\u4f53 1 \u306e\u8cea\u91cf\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-06a53a846ad5bc034f69fa05488404c4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1\\cdot g \\cdot \\text{sin}(\\alpha) =m_2 \\cdot g\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"174\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-802fde26f3388538d766a709d60cf48b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 \\cdot \\text{sin}(\\alpha) =m_2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"130\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-16ae359d38a8a11d1b1db4988b8eeaf1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 \\cdot \\text{sin}(50\\text{\u00ba}) =7\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"130\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-4249c6e274233595f50eedc1da64f56f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 =\\cfrac{7}{\\text{sin}(50\\text{\u00ba})}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"111\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-6e80f0daabb2167ec2f6622b08001a97_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1=9,14 \\ kg\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"106\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u4e00\u65b9\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u529b\u306e\u56f3\u3092\u898b\u308b\u3068\u3001\u6cd5\u7dda\u529b\u306f\u50be\u659c\u9762\u306b\u5782\u76f4\u306a\u7269\u4f53 1 \u306e\u91cd\u91cf\u306e\u30d9\u30af\u30c8\u30eb\u6210\u5206\u306b\u7b49\u3057\u304f\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-82b47c80ab7ef66a41fc4d4425032831_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_{1y}=N\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"66\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-56ad7b690b37b3f53ca20597e165860b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1\\cdot \\text{cos}(\\alpha)=N\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"120\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u65b9\u7a0b\u5f0f\u304b\u3089\u5782\u76f4\u6297\u529b\u306e\u5024\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-4a591e86900fca256cfa079da1bd0461_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}N=P_1\\cdot \\text{cos}(\\alpha)\\\\[3ex]N=m_1 \\cdot g\\cdot \\text{cos}(\\alpha)\\\\[ 3ex]N=9,14 \\cdot 9,81 \\cdot \\text{cos}(50\\text{\u00ba})\\\\[3ex]N=\\bm{57,63 \\ N}\\end{array}[\/ latex]\n\n<div class=&quot;wp-block-otfm-box-spoiler-end otfm-sp_end&quot;><\/div>\n<h3 class=&quot;wp-block-heading&quot;> Exercice 3<\/h3>\n<p> Un tra\u00eeneau de 70 kg glisse sur une pente de 30\u00ba avec une vitesse initiale de 2 m\/s. Si le coefficient de frottement dynamique entre le tra\u00eeneau et la neige est de 0,2, calculez la vitesse que le tra\u00eeneau acquerra apr\u00e8s avoir parcouru 20 m\u00e8tres. Donn\u00e9es : g=10 m\/s <sup>2<\/sup> . <\/p>\n<div class=&quot;wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__FFF8E1&quot; role=&quot;button&quot; tabindex=&quot;0&quot; aria-expanded=&quot;false&quot; data-otfm-spc=&quot;#FFF8E1&quot; style=&quot;text-align:center&quot;>\n<div class=&quot;otfm-sp__title&quot;> <strong>Voir la solution<\/strong><\/div>\n<\/div>\n<p> Tout d&#8217;abord, nous r\u00e9alisons le sch\u00e9ma corporel libre du tra\u00eeneau : <\/p>\n<figure class=&quot;wp-block-image aligncenter size-full is-resized&quot;><img decoding=&quot;async&quot; loading=&quot;lazy&quot; src=&quot;https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-plan-incline.png&quot; alt=&quot;exercice r\u00e9solu de la force de frottement ou de frottement sur un plan inclin\u00e9&quot; class=&quot;wp-image-4345&quot; width=&quot;305&quot; height=&quot;355&quot; srcset=&quot;https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-plan-incline-258x300.png 258w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-plan-incline.png 706w&quot; sizes=&quot;(max-width: 258px) 100vw, 258px&quot;><\/figure>\n<p> Le tra\u00eeneau a une acc\u00e9l\u00e9ration dans la direction de l&#8217;axe 1 (parall\u00e8le au plan inclin\u00e9) mais reste au repos dans la direction de l&#8217;axe 2 (perpendiculaire au plan inclin\u00e9), donc les \u00e9quations des forces sont : [latex]P_1-F_R=m\\cdot a&#8221; title=&#8221;Rendered by QuickLaTeX.com&#8221; height=&#8221;213&#8243; width=&#8221;8731&#8243; style=&#8221;vertical-align: 0px;&#8221;><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-6bdf90ed250934bf6cffbb110bc792a4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_2-N=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"90\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> 2 \u756a\u76ee\u306e\u65b9\u7a0b\u5f0f\u304b\u3089\u3001\u30b9\u30ec\u30c3\u30c9\u306b\u4f5c\u7528\u3059\u308b\u5782\u76f4\u6297\u529b\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-90b32b903f8be520ec73748b3de9b8b3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{array}{l}N=P_2\\\\[3ex]N=m\\cdot g\\cdot \\text{cos}(\\alpha) \\\\[3ex] N=70 \\cdot 10 \\cdot \\ text{cos}(30\u00ba)\\\\[3ex]N=606,22 \\ N\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"151\" width=\"194\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u5782\u76f4\u6297\u529b\u3068\u52d5\u6469\u64e6\u4fc2\u6570\u306e\u5024\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u5bfe\u5fdc\u3059\u308b\u5f0f\u3092\u9069\u7528\u3057\u3066\u6469\u64e6\u529b\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-e0a32cc7650b33325233258788c218d4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_R=\\mu\\cdot N=0,2 \\cdot 606,22=121,24 \\ N \" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"298\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u3057\u305f\u304c\u3063\u3066\u3001\u6700\u7d42\u901f\u5ea6\u3092\u6c7a\u5b9a\u3059\u308b\u306b\u306f\u3001\u307e\u305a\u30b9\u30ec\u30c3\u30c9\u306e\u52a0\u901f\u5ea6\u3092\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6700\u521d\u306b\u793a\u3055\u308c\u305f\u529b\u306e\u65b9\u7a0b\u5f0f\u304b\u3089\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-d87a1ef6aaa3476891df5da8334cbc49_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1-F_R=m\\cdot a\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"124\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-fa13e0490f51e32ac03b455043f6f32d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a=\\cfrac{P_1-F_R}{m}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"99\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-a6274d836af5618f7ef99e7f179c3902_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a=\\cfrac{m\\cdot g\\cdot \\text{sin}(\\alpha)-F_R}{m}\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"177\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-a3a9db70462cd187d50b851ede83983f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a=\\cfrac{70\\cdot 10\\cdot \\text{sin}(30\u00ba)-121.24}{70}\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"221\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-ba0d7325efa059351cc3d9aef838a9e2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a=3,27 \\ \\cfrac{m}{s^2}\" title=\"Rendered by QuickLaTeX.com\" height=\"34\" width=\"92\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u305d\u308a\u306e\u52a0\u901f\u5ea6\u304c\u308f\u304b\u3063\u305f\u3089\u3001\u4e00\u5b9a\u52a0\u901f\u5ea6\u3067\u306e\u76f4\u7dda\u904b\u52d5\u306e\u65b9\u7a0b\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u300120 \u30e1\u30fc\u30c8\u30eb\u306e\u79fb\u52d5\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-69f632cd171007df0f5bd6f0fa458a5c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=v_0\\cdot t +\\cfrac{1}{2}\\cdot a \\cdot t^2\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"150\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-b97ac72bf22d70273fece0cce195f4ca_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"20=2\\cdot t +\\cfrac{1}{2}\\cdot 3.27 \\cdot t^2\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"172\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-11a99cb686bf68cbcca594d0d60f801b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"0=1,64t^2+2t-20\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"158\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-7aa7e01e70b4199d597d05e261c970df_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle t=\\cfrac{-2\\pm \\sqrt{2^2-4\\cdot 1.64\\cdot (-20)}}{2\\cdot 1.64}=\\cfrac{-2\\ pm 11.63}{ 3.28}=\\begin{cases}2.94\\\\[2ex]-4.15 \\ \\color{red}\\bm{\\times}\\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"507\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u6642\u9593\u306f\u8ca0\u306b\u306a\u308a\u5f97\u306a\u3044\u7269\u7406\u91cf\u3067\u3042\u308b\u305f\u3081\u3001\u8ad6\u7406\u7684\u306b\u306f\u8ca0\u306e\u89e3\u306f\u9664\u5916\u3055\u308c\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-left\">\u6700\u5f8c\u306b\u3001\u7b49\u52a0\u901f\u5ea6\u306e\u516c\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u6700\u7d42\u901f\u5ea6\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-5ace98bfb166f5b813f593760fcfa048_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a=\\cfrac{v_f-v_0}{t_f-t_0}\\quad \\longrightarrow \\quad v_f=a\\cdot (t_f-t_0)+v_0\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"330\" style=\"vertical-align: -18px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-817a054f54a84b5a88667fc794feeb4d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"v_f=3.27\\cdot (2.94-0)+2=\\bm{11.61} \\ \\cfrac{\\bm{m}}{\\bm{s}}\" title=\"Rendered by QuickLaTeX.com\" height=\"34\" width=\"280\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u7269\u7406\u5b66\u306b\u304a\u3051\u308b\u50be\u659c\u9762\u3068\u306f\u4f55\u304b\u3001\u307e\u305f\u3053\u306e\u7a2e\u306e\u554f\u984c\u3092\u3069\u306e\u3088\u3046\u306b\u89e3\u6c7a\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u50be\u659c\u9762\u306b\u4f5c\u7528\u3059\u308b\u529b\u306e\u516c\u5f0f\u304c\u308f\u304b\u308a\u3001\u3055\u3089\u306b\u50be\u659c\u9762\u3067\u6bb5\u968e\u7684\u306b\u89e3\u304f\u6f14\u7fd2\u3067\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u50be\u659c\u9762\u3068\u306f\u4f55\u3067\u3059\u304b &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/ja\/%e5%82%be%e6%96%9c%e9%9d%a2\/\"> <span class=\"screen-reader-text\">\u50be\u659c\u9762<\/span> \u3082\u3063\u3068\u8aad\u3080 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