{"id":17,"date":"2023-06-27T17:03:39","date_gmt":"2023-06-27T17:03:39","guid":{"rendered":"https:\/\/physigeek.com\/cn\/%e5%8a%9b%e9%87%8f%e7%9a%84%e5%9d%87%e8%a1%a1\/"},"modified":"2023-06-27T17:03:39","modified_gmt":"2023-06-27T17:03:39","slug":"%e5%8a%9b%e9%87%8f%e7%9a%84%e5%9d%87%e8%a1%a1","status":"publish","type":"post","link":"https:\/\/physigeek.com\/cn\/%e5%8a%9b%e9%87%8f%e7%9a%84%e5%9d%87%e8%a1%a1\/","title":{"rendered":"\u529b\u91cf\u7684\u5747\u8861"},"content":{"rendered":"<p>\u672c\u6587\u89e3\u91ca\u4e86\u4ec0\u4e48\u662f\u529b\u5e73\u8861\u4ee5\u53ca\u8eab\u4f53\u4f55\u65f6\u5904\u4e8e\u5e73\u8861\u72b6\u6001\u3002\u60a8\u8fd8\u5c06\u4e86\u89e3\u529b\u77e9\u5e73\u8861\u4ee5\u53ca\u529b\u548c\u529b\u77e9\u7684\u5e73\u8861\u3002\u6b64\u5916\uff0c\u60a8\u5c06\u80fd\u591f\u770b\u5230\u4e00\u4e2a\u793a\u4f8b\uff0c\u5e76\u4e14\u80fd\u591f\u901a\u8fc7\u5df2\u89e3\u51b3\u7684\u529b\u5e73\u8861\u7ec3\u4e60\u8fdb\u884c\u7ec3\u4e60\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Equilibrio-de-fuerzas\"><\/span>\u529b\u91cf\u7684\u5747\u8861<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5f53\u65bd\u52a0\u5230\u521a\u4f53\u4e0a\u7684\u6240\u6709\u529b\u7684\u603b\u548c\u4e3a\u96f6\u65f6\uff0c\u521a\u4f53\u5904\u4e8e\u529b\u5e73\u8861\u72b6\u6001\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c<strong>\u5f53\u5408\u529b\u4e3a\u96f6\u65f6\uff0c\u7269\u4f53\u5904\u4e8e\u529b\u5e73\u8861\u72b6\u6001\u3002<\/strong><\/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-ff1948e7ffb274a2dfda7b4c2bd3cb5a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{F}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"46\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> <span style=\"color:#4fd12f\">\u27a4<\/span><strong>\u770b\uff1a<\/strong><a href=\"https:\/\/physigeek.com\/cn\/\u5408\u529b\/\">\u5408\u529b\u662f\u4ec0\u4e48\uff1f<\/a><\/p>\n<p>\u6b64\u5916\uff0c\u5982\u679c\u521a\u4f53\u5904\u4e8e\u529b\u5e73\u8861\u6761\u4ef6\u4e0b\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5c06\u6ca1\u6709\u52a0\u901f\u5ea6\u3002\u56e0\u6b64\uff0c\u5982\u679c\u8eab\u4f53\u5904\u4e8e\u9759\u6b62\u72b6\u6001\uff0c\u5b83\u5c06\u4fdd\u6301\u5176\u901f\u5ea6\u6216\u4e0d\u79fb\u52a8\u3002<\/p>\n<p>\u5fc5\u987b\u8003\u8651\u5230\uff0c\u8981\u4f7f\u7269\u4f53\u5904\u4e8e\u5e73\u79fb\u5e73\u8861\uff0c\u6bcf\u4e2a\u65b9\u5411\u4e0a\u7684\u529b\u4e4b\u548c\u5fc5\u987b\u4e3a\u96f6\uff08\u5982\u679c\u6211\u4eec\u5728\u7a7a\u95f4\u4e2d\u5de5\u4f5c\uff0c\u5219\u4e3a\u4e09\u4e2a\u65b9\u5411\uff1b\u5982\u679c\u6211\u4eec\u5728\u5e73\u9762\u4e2d\u5de5\u4f5c\uff0c\u5219\u4e3a\u4e24\u4e2a\u65b9\u5411\uff09\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-8173059e9d835ea8000739691bd3c498_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{F_x}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"53\" 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-f019ed19f677d908d6dc565e03921605_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{F_y}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"52\" 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-3d5793601c780b47719e5936868096fb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{F_z}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"52\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p>\u5982\u679c\u4e0d\u6ee1\u8db3\u524d\u9762\u4e09\u4e2a\u6761\u4ef6\u4e4b\u4e00\uff0c\u7269\u4f53\u5c06\u4e0d\u5e73\u8861\u529b\uff0c\u56e0\u6b64\u4f1a\u4ea7\u751f\u52a0\u901f\u5ea6\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Equilibrio-de-momentos\"><\/span>\u77ac\u65f6\u5e73\u8861<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5f53\u65bd\u52a0\u5230\u521a\u4f53\u4e0a\u7684\u6240\u6709\u529b\u77e9\u4e4b\u548c\u4e3a\u96f6\u65f6\uff0c\u521a\u4f53\u5904\u4e8e\u529b\u77e9\u5e73\u8861\u72b6\u6001\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c<strong>\u5f53\u4ea7\u751f\u7684\u52a8\u91cf\u4e3a\u96f6\u65f6\uff0c\u7269\u4f53\u5904\u4e8e\u52a8\u91cf\u5e73\u8861\u3002<\/strong><\/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-c54de0f44f7a6549f27abfb7804a2c0c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{M}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"52\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u56e0\u6b64\uff0c\u529b\u77e9\u5e73\u8861\u7c7b\u4f3c\u4e8e\u529b\u5e73\u8861\uff0c\u4f46\u6240\u6709\u4e09\u4e2a\u65cb\u8f6c\u8f74\u800c\u4e0d\u662f\u6240\u6709\u4e09\u4e2a\u7eb5\u5411\u8f74\u7684\u603b\u548c\u5fc5\u987b\u4e3a\u96f6\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-a19ea30e88dea24c5f83bcbeabe34336_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{M_x}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"58\" 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-e465040a99f8e342adb6376e49a82089_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{M_y}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"58\" 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-2b60edfb4e54fa1744d266ff1d25c851_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\somme \\vv{M_z}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"58\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p>\u5982\u679c\u521a\u6027\u56fa\u4f53\u4e0d\u5904\u4e8e\u529b\u77e9\u5e73\u8861\uff0c\u5219\u53ea\u8981\u4e0d\u6ee1\u8db3\u524d\u9762\u7684\u65b9\u7a0b\u5373\u53ef\uff0c\u56e0\u6b64\u5177\u6709\u65cb\u8f6c\u52a0\u901f\u5ea6\uff0c\u6216\u8005\u6362\u53e5\u8bdd\u8bf4\uff0c\u7269\u4f53\u5c06\u5f00\u59cb\u81ea\u884c\u65cb\u8f6c\uff08\u4ed6\u4ece\u9759\u6b62\u5f00\u59cb\uff09 \u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Equilibrio-de-fuerzas-y-momentos\"><\/span>\u529b\u548c\u529b\u77e9\u7684\u5e73\u8861<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>\u5f53\u5408\u529b\u548c\u5408\u529b\u77e9\u4e3a\u96f6\u65f6\uff0c\u521a\u4f53\u5904\u4e8e\u529b\u548c\u529b\u77e9\u5e73\u8861\u72b6\u6001<\/strong>\uff0c\u5373\u5f53\u6240\u6709\u529b\u548c\u6240\u6709\u529b\u77e9\u4e4b\u548c\u4e3a\u96f6\u65f6\uff0c\u521a\u4f53\u5904\u4e8e\u529b\u548c\u529b\u77e9\u5e73\u8861\u72b6\u6001\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-6c79e87aef62838b71a11567cc9a620f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sum \\vv{F}=0 \\qquad \\sum\\vv{M}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"180\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u4ece\u903b\u8f91\u4e0a\u8bb2\uff0c\u53ea\u6709\u5f53\u6240\u6709\u8f74\u4e0a\u7684\u529b\u548c\u529b\u77e9\u4e4b\u548c\u4e3a\u96f6\u65f6\uff0c\u7269\u4f53\u624d\u4f1a\u5904\u4e8e\u5e73\u8861\u72b6\u6001\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-0560b8f93d7021c3c8c86531cb30833d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sum \\vv{F_x}=0\\qquad \\sum \\vv{M_x}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"193\" 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-ea213173f7160398c238be4689cdd784_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sum \\vv{F_y}=0\\qquad \\sum \\vv{M_y}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"192\" 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-6f64d40d9df66dff51c3fff8b9fbad7f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\sum \\vv{F_z}=0\\qquad \\sum \\vv{M_z}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"191\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u6b63\u5982\u6211\u4eec\u5728\u4e0a\u9762\u770b\u5230\u7684\uff0c\u7269\u4f53\u4e0d\u4e00\u5b9a\u5fc5\u987b\u540c\u65f6\u5904\u4e8e\u529b\u548c\u529b\u77e9\u7684\u5e73\u8861\uff0c\u5b83\u4e5f\u53ef\u4ee5\u4ec5\u5904\u4e8e\u529b\u7684\u5e73\u8861\u800c\u5728\u529b\u77e9\u4e0a\u8868\u73b0\u51fa\u4e00\u4e9b\u4e0d\u5e73\u8861\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5f53\u7269\u4f53\u540c\u65f6\u5904\u4e8e\u529b\u5e73\u8861\u548c\u529b\u77e9\u5e73\u8861\u65f6<strong>\uff0c\u5219\u79f0\u8be5\u7269\u4f53\u5904\u4e8e\u5e73\u8861\u72b6\u6001<\/strong>\u3002<\/p>\n<p>\u5e73\u8861\u6761\u4ef6\u7528\u4e8e\u67e5\u627e\u65bd\u52a0\u5230\u7269\u4f53\u4e0a\u7684\u529b\u7684\u503c\uff0c\u56e0\u4e3a\u5b83\u4eec\u5141\u8bb8\u6211\u4eec\u5236\u5b9a\u65b9\u7a0b\uff0c\u5e76\u4ece\u4e2d\u6211\u4eec\u53ef\u4ee5\u6c42\u89e3\u672a\u77e5\u7684\u529b\u3002\u4f8b\u5982\uff0c\u6cd5\u5411\u529b\u901a\u5e38\u901a\u8fc7\u5782\u76f4\u5e73\u8861\u65b9\u7a0b\u6765\u8ba1\u7b97\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplo-de-equilibrio-de-fuerzas\"><\/span>\u6743\u529b\u5e73\u8861\u7684\u4f8b\u5b50<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e3a\u4e86\u5145\u5206\u7406\u89e3\u8fd9\u4e2a\u6982\u5ff5\uff0c\u8ba9\u6211\u4eec\u770b\u4e00\u4e2a\u5e73\u8861\u529b\u7cfb\u7edf\u7684\u5178\u578b\u4f8b\u5b50\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4f4d\u4e8e\u5730\u9762\u4e0a\u7684\u9759\u6b62\u7269\u4f53\u5904\u4e8e\u529b\u5e73\u8861\u72b6\u6001\uff0c\u56e0\u4e3a\u53ea\u6709\u91cd\u91cf\u7684\u529b\u548c\u6cd5\u5411\u529b\u4f5c\u7528\u5728\u5176\u4e0a\u5e76\u4e14\u5f7c\u6b64\u76f8\u53cd\u3002\u56e0\u6b64\uff0c\u6240\u6709\u65b9\u5411\u4e0a\u7684\u529b\u548c\u529b\u77e9\u7684\u603b\u548c\u7b49\u4e8e\u96f6\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\/equilibre-des-forces.png\" alt=\"\u529b\u91cf\u7684\u5747\u8861\" class=\"wp-image-294\" width=\"332\" height=\"264\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/equilibre-des-forces-300x238.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/equilibre-des-forces-768x610.png 768w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/equilibre-des-forces.png 852w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<\/div>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7269\u4f53\u4e5f\u5904\u4e8e\u529b\u77e9\u5e73\u8861\u72b6\u6001\uff0c\u56e0\u4e3a\u6ca1\u6709\u529b\u77e9\u4f5c\u7528\u4e8e\u5b83\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicio-resuelto-de-equilibrio-de-fuerzas\"><\/span>\u6743\u529b\u5e73\u8861\u7ec3\u4e60\u5df2\u89e3\u51b3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u4e24\u4e2a\u7269\u4f53\u901a\u8fc7\u4e00\u6839\u7ef3\u5b50\u548c\u4e00\u4e2a\u8d28\u91cf\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u7684\u6ed1\u8f6e\u8fde\u63a5\u8d77\u6765\u3002\u5982\u679c\u7269\u4f53 2 \u7684\u8d28\u91cf\u4e3a 7 kg\uff0c\u659c\u5761\u7684\u659c\u7387\u4e3a 50\u00b0\uff0c\u5219\u8ba1\u7b97\u7269\u4f53 1 \u7684\u8d28\u91cf\uff0c\u4f7f\u6574\u4e2a\u7cfb\u7edf\u5904\u4e8e\u5e73\u8861\u72b6\u6001\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6469\u64e6\u529b\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002 <\/li>\n<\/ul>\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-dequilibre-des-forces.png\" alt=\"\u6743\u529b\u5e73\u8861\u95ee\u9898\" 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>\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\">\u7269\u4f53 1 \u4f4d\u4e8e\u503e\u659c\u7684\u659c\u5761\u4e0a\uff0c\u56e0\u6b64\u9996\u5148\u8981\u505a\u7684\u662f\u5c06\u5176\u91cd\u91cf\u7684\u529b\u8fdb\u884c\u77e2\u91cf\u5206\u89e3\uff0c\u4ee5\u83b7\u5f97\u659c\u5761\u8f74\u4e0a\u7684\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-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\">\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=\"\u6743\u529b\u5e73\u8861\u6f14\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-9b5e757fb28e9dde3aed458f89a3ed53_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P_1\\cdot \\text{sen}(\\alpha)=P_2\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"123\" 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\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"122\" 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-9a26d132815a0ce878a6ad874c8b40b0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1 =\\cfrac{7}{\\text{sin}(50\u00ba)}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"103\" 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-37d57b7e3c4a13f3c4dc4ae981f7d61f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_1=9,14\\kg\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"82\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u89e3\u91ca\u4e86\u4ec0\u4e48\u662f\u529b\u5e73\u8861\u4ee5\u53ca\u8eab\u4f53\u4f55\u65f6\u5904\u4e8e\u5e73\u8861\u72b6\u6001\u3002\u60a8\u8fd8\u5c06\u4e86\u89e3\u529b\u77e9\u5e73\u8861\u4ee5\u53ca\u529b\u548c\u529b\u77e9\u7684\u5e73\u8861\u3002\u6b64\u5916\uff0c\u60a8\u5c06\u80fd\u591f\u770b\u5230\u4e00\u4e2a\u793a &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/cn\/%e5%8a%9b%e9%87%8f%e7%9a%84%e5%9d%87%e8%a1%a1\/\"> <span class=\"screen-reader-text\">\u529b\u91cf\u7684\u5747\u8861<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-17","post","type-post","status-publish","format-standard","hentry","category-5"],"yoast_head":"<!-- This site is optimized 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