{"id":46,"date":"2023-06-26T20:26:33","date_gmt":"2023-06-26T20:26:33","guid":{"rendered":"https:\/\/physigeek.com\/cn\/%e8%ba%ab%e4%bd%93%e9%87%8d%e9%87%8f\/"},"modified":"2023-06-26T20:26:33","modified_gmt":"2023-06-26T20:26:33","slug":"%e8%ba%ab%e4%bd%93%e9%87%8d%e9%87%8f","status":"publish","type":"post","link":"https:\/\/physigeek.com\/cn\/%e8%ba%ab%e4%bd%93%e9%87%8d%e9%87%8f\/","title":{"rendered":"\u91cd\u91cf\uff08\u7269\u7406\uff09"},"content":{"rendered":"<p>\u672c\u6587\u89e3\u91ca\u4e86\u91cd\u91cf\u5728\u7269\u7406\u5b66\u4e2d\u7684\u542b\u4e49\u3002\u5728\u90a3\u91cc\u60a8\u5c06\u627e\u5230\u91cd\u91cf\u7684\u5b9a\u4e49\u3001\u5982\u4f55\u8ba1\u7b97\u7269\u4f53\u7684\u91cd\u91cf\u4ee5\u53ca\u91cd\u91cf\u548c\u8d28\u91cf\u4e4b\u95f4\u7684\u533a\u522b\u3002\u6700\u540e\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u9010\u6b65\u7684\u5065\u7f8e\u7ec3\u4e60\u8fdb\u884c\u8bad\u7ec3\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-el-peso-en-fisica\"><\/span>\u7269\u7406\u5b66\u4e2d\u7684\u91cd\u91cf\u662f\u4ec0\u4e48\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u7269\u7406\u5b66\u4e2d\uff0c\u7269\u4f53\u7684<strong>\u91cd\u91cf<\/strong>\u662f\u4f5c\u7528\u5728\u8be5\u7269\u4f53\u4e0a\u7684\u91cd\u529b\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u91cd\u91cf\u7684\u6982\u5ff5\u662f\u6307\u5730\u7403\u5bf9\u67d0\u4e2a\u7269\u4f53\u65bd\u52a0\u7684\u91cd\u529b\uff0c\u4f46\u4e5f\u53ef\u4ee5\u6307\u4efb\u4f55\u5176\u4ed6\u884c\u661f\u7684\u91cd\u529b\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u7531\u4e8e\u91cd\u91cf\u662f\u4e00\u79cd\u529b\uff0c\u56e0\u6b64\u5b83\u662f\u4e00\u4e2a\u5177\u6709\u6a21\u3001\u65b9\u5411\u3001\u65b9\u5411\u548c\u4f5c\u7528\u70b9\u7684\u77e2\u91cf\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u770b\u5230\u5982\u4f55\u627e\u5230\u91cd\u91cf\u503c\uff0c\u4f46\u65b9\u5411\u59cb\u7ec8\u662f\u5782\u76f4\u7684\uff0c\u65b9\u5411\u662f\u5411\u4e0b\u7684\uff0c\u5e76\u4e14\u5e94\u7528\u70b9\u5c06\u5bf9\u5e94\u4e8e\u8eab\u4f53\u7684\u91cd\u5fc3\u3002<\/p>\n<p>\u6b63\u5982\u60a8\u6240\u770b\u5230\u7684\uff0c<strong>\u5728\u7269\u7406\u5b66\u4e2d\u6211\u4eec\u5fc5\u987b\u533a\u5206\u91cd\u91cf\u548c\u8d28\u91cf<\/strong>\uff0c\u56e0\u4e3a\u8fd9\u4e24\u4e2a\u672f\u8bed\u7684\u542b\u4e49\u5728\u65e5\u5e38\u751f\u6d3b\u4e2d\u88ab\u8bef\u7528\u3002\u4e0b\u9762\u60a8\u8be6\u7ec6\u89e3\u91ca\u4e86\u7269\u4f53\u7684\u91cd\u91cf\u548c\u8d28\u91cf\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/p>\n<p>\u7269\u7406\u5b66\u4e2d\u91cd\u91cf\u7684\u7b26\u53f7\u662f\u5b57\u6bcdP\uff0c\u56e0\u6b64\u8868\u793a\u7269\u4f53\u91cd\u91cf\u7684\u529b\u7684\u7bad\u5934\u901a\u8fc7\u5728\u5176\u65c1\u8fb9\u653e\u7f6e\u5b57\u6bcdP\u6765\u6307\u793a\u3002<\/p>\n<p>\u7531\u4e8e\u5b83\u662f\u529b\uff0c\u56e0\u6b64\u91cd\u91cf\u7684\u6d4b\u91cf\u5355\u4f4d\u662f\u725b\u987f\uff0c\u7528\u5b57\u6bcd N \u8868\u793a\u3002\u4f8b\u5982\uff0c\u4f53\u91cd 50 \u516c\u65a4\u7684\u4eba\u7684\u91cd\u91cf\u7ea6\u4e3a 490 N\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Como-calcular-el-peso-en-fisica\"><\/span>\u7269\u7406\u5b66\u4e2d\u5982\u4f55\u8ba1\u7b97\u91cd\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u7269\u7406\u5b66\u4e2d\uff0c\u7269\u4f53\u91cd\u91cf\u7684\u516c\u5f0f\u7b49\u4e8e\u8be5\u7269\u4f53\u7684\u8d28\u91cf\u4e58\u4ee5\u65bd\u52a0\u5f15\u529b\u7684\u6052\u661f\u7684\u5f15\u529b\u3002\u56e0\u6b64\uff0c\u8981<strong>\u8ba1\u7b97\u884c\u661f\u5438\u5f15\u7269\u4f53\u7684\u91cd\u529b<\/strong>\uff0c\u7269\u4f53\u7684\u8d28\u91cf\u5fc5\u987b\u4e58\u4ee5\u884c\u661f\u7684\u5f15\u529b\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u8ba1\u7b97\u7269\u4f53\u91cd\u91cf\u7684\u516c\u5f0f\u4e3a\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/poids-physique.png\" alt=\"\u8eab\u4f53\u91cd\u91cf\" class=\"wp-image-814\" width=\"241\" height=\"242\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/poids-physique-300x300.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/poids-physique-150x150.png 150w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/poids-physique.png 483w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<\/div>\n<p>\u8bf7\u8bb0\u4f4f\uff0c\u5730\u7403\u4e0a\u7684\u91cd\u529b\u4e3a 9.81 m\/ <sup>s2<\/sup> \u3002 <\/p>\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>\u67e5\u770b\u4f53\u91cd\u516c\u5f0f\u6f14\u793a<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u4e3a\u4e86\u6f14\u793a\u91cd\u529b\u7684\u516c\u5f0f\uff0c\u6211\u4eec\u5c06\u4ece\u4ee3\u6570\u8868\u8fbe\u5f0f\u5f00\u59cb\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u8ba1\u7b97\u4efb\u4f55\u7269\u4f53\u5bf9\u4efb\u4f55\u5176\u4ed6\u7269\u4f53\u65bd\u52a0\u7684\u91cd\u529b\uff1a<\/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-934a1cae402a8b50d0bae2b3910e1874_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F=G\\cdot \\cfrac{M\\cdot m}{r^2}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"114\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u7136\u800c\uff0c\u5f15\u529b\u7684\u516c\u5f0f\u6070\u6070\u662f\u4e07\u6709\u5f15\u529b\u5e38\u6570\uff08G\uff09\u4e58\u4ee5\u5929\u4f53\u8d28\u91cf\uff08M\uff09\u9664\u4ee5\u5929\u4f53\u4e2d\u5fc3\u4e0e\u5176\u8868\u9762\u8ddd\u79bb\u7684\u5e73\u65b9\uff08r <sup>2<\/sup> \uff09\uff1a<\/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-278bac151b8b02af9dbca5a377d8823e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"g=\\cfrac{G\\cdot M}{r^2}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"81\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u56e0\u6b64\uff0c\u901a\u8fc7\u7528\u4e00\u4e2a\u8868\u8fbe\u5f0f\u66ff\u6362\u53e6\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u6211\u4eec\u5f97\u51fa\u6743\u91cd\u516c\u5f0f\uff1a<\/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-934a1cae402a8b50d0bae2b3910e1874_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F=G\\cdot \\cfrac{M\\cdot m}{r^2}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"114\" 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-4ce26d502dae0dc36ae1476ed16a8dd7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F=\\cfrac{G\\cdot M}{r^2}\\cdot m\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"113\" 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-38ec346ff053c03c2ff1249c9b995064_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F=g\\cdot m\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"74\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Diferencia-entre-peso-y-masa\"><\/span>\u91cd\u91cf\u548c\u8d28\u91cf\u4e4b\u95f4\u7684\u533a\u522b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>\u91cd\u91cf\u548c\u8d28\u91cf<\/strong>\u662f\u7269\u7406\u5b66\u4e2d\u4e24\u4e2a\u4e0d\u540c\u7684\u6982\u5ff5\u3002\u8d28\u91cf\u662f\u7269\u4f53\u6240\u542b\u7269\u8d28\u7684\u91cf\uff0c\u4ee5\u5343\u514b (kg) \u4e3a\u5355\u4f4d\u6d4b\u91cf\uff0c\u800c\u91cd\u91cf\u662f\u6052\u661f\u5bf9\u7269\u4f53\u65bd\u52a0\u7684\u5f15\u529b\uff0c\u5176\u6d4b\u91cf\u5355\u4f4d\u662f\u725b\u987f (N)\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4e00\u4e2a\u4f53\u91cd 70 \u516c\u65a4\u7684\u4eba\u5728\u5730\u7403\u4e0a\u7684\u91cd\u91cf\u4e3a 686.7 N\u3002\u7136\u800c\uff0c\u540c\u4e00\u4e2a\u4eba\u5728\u6708\u7403\u4e0a\u7684\u91cd\u91cf\u4e3a 113.4 N\uff0c\u5c3d\u7ba1\u4ed6\u4eec\u7684\u8d28\u91cf\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5f53\u6211\u4eec\u95ee\u201c\u4f60\u7684\u4f53\u91cd\u662f\u591a\u5c11\uff1f\u201d\u65f6\u00bb \u8981\u77e5\u9053\u67d0\u4eba\u7684\u8d28\u91cf\uff0c\u6211\u4eec\u5b9e\u9645\u4e0a\u5e94\u8be5\u95ee\u201c\u4f60\u7684\u8d28\u91cf\u662f\u591a\u5c11\uff1f\u201d \u00bb<\/p>\n<p>\u91cd\u91cf\u548c\u8d28\u91cf\u4e4b\u95f4\u7684\u53e6\u4e00\u4e2a\u533a\u522b\u662f\u6d4b\u91cf\u7279\u6027\u6240\u9700\u7684\u4eea\u5668\u3002\u91cd\u91cf\u662f\u4f7f\u7528\u6d4b\u529b\u8ba1\u6d4b\u91cf\u7684\uff0c\u800c\u8d28\u91cf\u662f\u4f7f\u7528\u79e4\u6d4b\u91cf\u7684\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u8d28\u91cf\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u6570\u5b57\uff0c\u4f46\u91cd\u91cf\u662f\u4e00\u4e2a\u77e2\u91cf\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u79cd\u529b\u3002\u56e0\u6b64\uff0c\u50cf\u4efb\u4f55\u5411\u91cf\u4e00\u6837\uff0c\u6743\u91cd\u4e5f\u6709\u65b9\u5411\u3001\u542b\u4e49\u3001\u5927\u5c0f\u548c\u5e94\u7528\u70b9\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicios-resueltos-del-peso\"><\/span>\u89e3\u51b3\u91cd\u91cf\u7ec3\u4e60<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 class=\"wp-block-heading\">\u7ec3\u4e601<\/h3>\n<p>\u8ba1\u7b97\u8d28\u91cf\u4e3a 45 \u5343\u514b\u7684\u7269\u4f53\u5728\u5730\u7403\u4e0a\u7684\u91cd\u91cf\u3002\u4f7f\u7528\u503c g=9.81 m\/s <sup>2<\/sup>\u4f5c\u4e3a\u5730\u7403\u91cd\u529b\u3002 <\/p>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u8981\u786e\u5b9a\u7269\u4f53\u7684\u91cd\u91cf\uff0c\u53ea\u9700\u5e94\u7528\u76f8\u5e94\u7684\u516c\u5f0f\u5373\u53ef\uff1a<\/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-c0cdb663ec9f8fe79fbecd960b50fc39_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P=m\\cdot g\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"75\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u73b0\u5728\u6211\u4eec\u5c06\u7269\u4f53\u7684\u8d28\u91cf\u548c\u5730\u7403\u5f15\u529b\u7684\u6570\u636e\u4ee3\u5165\u516c\u5f0f\u8ba1\u7b97\u91cd\u91cf\uff1a <\/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-3385b7fd3909025dacf75d3c1d2a533f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P=45\\cdot 9,81=441,45 \\N\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"178\" 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\">\u7ec3\u4e602<\/h3>\n<p>\u5730\u7403\u4e0a\u7269\u4f53\u7684\u91cd\u91cf\u4e3a 650 N\uff0c\u8fd9\u4e2a\u91cd\u91cf\u5728\u706b\u661f\u4e0a\u7684\u7b49\u6548\u8d28\u91cf\u662f\u591a\u5c11\uff1f\u4e8b\u5b9e\uff1a\u706b\u661f\u4e0a\u7684\u91cd\u529b\u4e3a 3721 m\/s <sup>2<\/sup> \u3002 <\/p>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u4e0e\u91cd\u91cf\u6709\u5173\u7684\u7269\u7406\u95ee\u9898\uff0c\u6211\u4eec\u5fc5\u987b\u4f7f\u7528\u4e0a\u9762\u89e3\u91ca\u7684\u516c\u5f0f\uff1a<\/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-c0cdb663ec9f8fe79fbecd960b50fc39_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P=m\\cdot g\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"75\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u77e5\u9053\u91cd\u91cf\u548c\u91cd\u529b\u7684\u503c\uff0c\u5e76\u4e14\u6211\u4eec\u60f3\u77e5\u9053\u7269\u4f53\u7684\u8d28\u91cf\uff0c\u6240\u4ee5\u6211\u4eec\u9996\u5148\u4ece\u516c\u5f0f\u4e2d\u6c42\u89e3\u8d28\u91cf\uff1a<\/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-19aef2a1a6353e9f29b7452f13a42b30_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{P}{g}\" title=\"Rendered by QuickLaTeX.com\" height=\"42\" width=\"55\" style=\"vertical-align: -16px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u6700\u540e\uff0c\u6211\u4eec\u5c06\u6570\u636e\u4ee3\u5165\u516c\u5f0f\u6765\u8ba1\u7b97\u706b\u661f\u4e0a 650 N \u91cd\u7269\u7684\u8d28\u91cf\uff1a <\/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-ebd84d665f96e95fc6b891eb34875db3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m=\\cfrac{650}{3.721}=174,68 \\ kg\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"182\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u7ec3\u4e603<\/h3>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u8d28\u91cf\u4e3a 12 kg \u7684\u521a\u4f53\uff0c\u7531\u4e24\u6839\u7ef3\u5b50\u60ac\u6302\uff0c\u5176\u89d2\u5ea6\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u8ba1\u7b97\u6bcf\u6839\u7ef3\u5b50\u5fc5\u987b\u65bd\u52a0\u7684\u529b\u624d\u80fd\u4fdd\u6301\u521a\u4f53\u4fdd\u6301\u5e73\u8861\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-premiere-condition-dequilibre.png\" alt=\"\u7b2c\u4e00\u5e73\u8861\u6761\u4ef6\u95ee\u9898\" class=\"wp-image-372\" width=\"243\" height=\"243\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-premiere-condition-dequilibre-300x300.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-premiere-condition-dequilibre-150x150.png 150w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-de-premiere-condition-dequilibre.png 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<\/div>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u89e3\u51b3\u8fd9\u7c7b\u95ee\u9898\u6211\u4eec\u9996\u5148\u8981\u505a\u7684\u662f\u753b\u51fa\u4eba\u7269\u7684\u81ea\u7531\u4f53\u56fe\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-de-la-premiere-condition-dequilibre.png\" alt=\"\u89e3\u51b3\u4e86\u7b2c\u4e00\u4e2a\u5e73\u8861\u6761\u4ef6\u7684\u884c\u4f7f\" class=\"wp-image-375\" width=\"282\" height=\"335\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-de-la-premiere-condition-dequilibre-252x300.png 252w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-de-la-premiere-condition-dequilibre.png 600w\" sizes=\"auto, (max-width: 252px) 100vw, 252px\"><\/figure>\n<\/div>\n<p class=\"has-text-align-left\">\u8bf7\u6ce8\u610f\uff0c\u5b9e\u9645\u4e0a\u53ea\u6709\u4e09\u4e2a\u529b\u4f5c\u7528\u5728\u60ac\u6302\u7684\u7269\u4f53\u4e0a\uff0c\u5373\u91cd\u91cf P \u7684\u529b\u548c\u5f26\u7684\u5f20\u529b T <sub>1<\/sub>\u548c T <sub>2<\/sub> \u3002 T <sub>1x<\/sub> \u3001T <sub>1y<\/sub> \u3001T <sub>2x<\/sub>\u548cT <sub>2y<\/sub>\u8868\u793a\u7684\u529b\u5206\u522b\u662fT <sub>1<\/sub>\u548cT <sub>2<\/sub>\u7684\u77e2\u91cf\u5206\u91cf\u3002<\/p>\n<p class=\"has-text-align-left\">\u56e0\u6b64\uff0c\u7531\u4e8e\u6211\u4eec\u77e5\u9053\u5f26\u7684\u503e\u659c\u89d2\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u5f20\u529b\u77e2\u91cf\u5206\u91cf\u7684\u8868\u8fbe\u5f0f\uff1a <\/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-bc09423d2d10435101c7d6b087add524_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" T_{1x}=T_1\\cdot \\text{cos}(20\u00ba)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"135\" 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-0603d4b02835532dcefe2290484067fb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" T_{1y}=T_1\\cdot \\text{sin}(20\u00ba)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"133\" 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-0b10a6fc64a1a84b9f4f2c47b7990766_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" T_{2x}=T_2\\cdot \\text{cos}(55\u00ba)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"135\" 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-3e7a1dc2ffa7eb20e5e2d9346f0b96a2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" T_{2y}=T_2\\cdot \\text{sin}(55\u00ba)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"133\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u53e6\u4e00\u65b9\u9762\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5e94\u7528\u91cd\u529b\u516c\u5f0f\u6765\u8ba1\u7b97\u91cd\u529b\uff1a<\/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-dab14bd2fa937f39825c5add90b3ae58_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P=m\\cdot g=12\\cdot 9,81 =117,72 \\ N\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"261\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u95ee\u9898\u9648\u8ff0\u544a\u8bc9\u6211\u4eec\uff0c\u7269\u4f53\u5904\u4e8e\u5e73\u8861\u72b6\u6001\uff0c\u56e0\u6b64\u5782\u76f4\u529b\u7684\u603b\u548c\u4e0e\u6c34\u5e73\u529b\u7684\u603b\u548c\u5fc5\u987b\u7b49\u4e8e\u96f6\u3002\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5efa\u7acb\u529b\u65b9\u7a0b\u5e76\u5c06\u5176\u8bbe\u7f6e\u4e3a\u96f6\uff1a <\/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-6532044e76d6b9246f64624159b08c33_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-T_{1x}+T_{2x}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"119\" 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-52aadf04437252b1f9c17107dfc16a84_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"T_{1y}+T_{2y}-P=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"140\" style=\"vertical-align: -6px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u73b0\u5728\u6211\u4eec\u7528\u4e4b\u524d\u627e\u5230\u7684\u8868\u8fbe\u5f0f\u66ff\u6362\u5f20\u529b\u7684\u7ec4\u6210\u90e8\u5206\uff1a <\/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-4a4993c55ab7f27b6c0b67793ee5ff8a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-T_1\\cdot\\text{cos}(20\u00ba)+T_2\\cdot \\text{cos}(55\u00ba)=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"239\" 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-204773c167037418680872592d118315_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"T_1\\cdot \\text{sin}(20\u00ba)+T_2\\cdot \\text{sin}(55\u00ba)-117.72=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"293\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u6700\u540e\uff0c\u6211\u4eec\u6c42\u89e3\u65b9\u7a0b\u7ec4\u4ee5\u83b7\u5f97\u529b T <sub>1<\/sub>\u548c T <sub>2<\/sub>\u7684\u503c\uff1a <\/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-8220cbad28a7824cc1d3f06f4dcb7510_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left.\\begin{array}{l}-T_1\\cdot 0,94+T_2\\cdot 0,57=0\\\\[2ex]T_1\\cdot 0,34+T_2\\cdot 0,82-117 .72=0\\end{array }\\right\\} \\longrightarrow \\ \\begin{array}{c}T_1=69,56 \\ N\\\\[2ex]T_2=114,74 \\ 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 4<\/h3>\n<p> Comme le montre la figure suivante, deux objets sont reli\u00e9s par une corde et une poulie de masses n\u00e9gligeables. Si l&#8217;objet 2 a une masse de 7 kg et que l&#8217;inclinaison de la rampe est de 50\u00ba, calculez la masse de l&#8217;objet 1 pour que l&#8217;ensemble du syst\u00e8me soit dans des conditions d&#8217;\u00e9quilibre. Dans ce cas, la force de frottement peut \u00eatre n\u00e9glig\u00e9e. <\/p>\n<div class=&quot;wp-block-image&quot;>\n<figure class=&quot;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\/probleme-dequilibre-des-forces.png&quot; alt=&quot;probl\u00e8me d'\u00e9quilibre translationnel&quot; class=&quot;wp-image-295&quot; width=&quot;299&quot; height=&quot;240&quot; srcset=&quot;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&quot; sizes=&quot;(max-width: 300px) 100vw, 300px&quot;><\/figure>\n<\/div>\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> Le corps 1 est sur une pente inclin\u00e9e, donc la premi\u00e8re chose \u00e0 faire est de vectoriser la force de son poids pour avoir les forces sur les axes de la pente : [latex]P_{1x}=P_1\\cdot \\text{sin}(\\alpha)&#8221; title=&#8221;Rendered by QuickLaTeX.com&#8221; height=&#8221;340&#8243; width=&#8221;2918&#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-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\">\u56e0\u6b64\uff0c\u4f5c\u7528\u5728\u6574\u4e2a\u7cfb\u7edf\u4e0a\u7684\u4e00\u7ec4\u529b\u662f\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"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=\"\u5e73\u79fb\u5e73\u8861\u7ec3\u4e60\u5df2\u89e3\u51b3\" 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<\/div>\n<p class=\"has-text-align-left\">\u95ee\u9898\u9648\u8ff0\u544a\u8bc9\u6211\u4eec\uff0c\u529b\u7cfb\u7edf\u5904\u4e8e\u5e73\u8861\u72b6\u6001\uff0c\u56e0\u6b64\u4e24\u4e2a\u7269\u4f53\u5fc5\u987b\u5904\u4e8e\u5e73\u8861\u72b6\u6001\u3002\u6839\u636e\u8fd9\u4e9b\u4fe1\u606f\uff0c\u6211\u4eec\u53ef\u4ee5\u63d0\u51fa\u4e24\u4e2a\u7269\u4f53\u7684\u5e73\u8861\u65b9\u7a0b\uff1a <\/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-ed082b4f064316ab20fb0d26054d3010_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 ] Ainsi, la composante du poids de l'objet 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=\"87\" width=\"1160\" 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\">\u73b0\u5728\u6211\u4eec\u5e94\u7528\u91cd\u529b\u516c\u5f0f\u5e76\u7b80\u5316\u65b9\u7a0b\uff1a <\/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-left\">\u6700\u540e\uff0c\u6211\u4eec\u66ff\u6362\u6570\u636e\u5e76\u6c42\u89e3\u7269\u4f53 1 \u7684\u8d28\u91cf\uff1a <\/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-0457f85ca65afde96b2e575ce54869dd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 \\cdot \\text{sin}(50\u00ba) =7\" 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