{"id":20,"date":"2023-06-27T14:15:28","date_gmt":"2023-06-27T14:15:28","guid":{"rendered":"https:\/\/physigeek.com\/cn\/%e6%97%8b%e8%bd%ac%e5%b9%b3%e8%a1%a1\/"},"modified":"2023-06-27T14:15:28","modified_gmt":"2023-06-27T14:15:28","slug":"%e6%97%8b%e8%bd%ac%e5%b9%b3%e8%a1%a1","status":"publish","type":"post","link":"https:\/\/physigeek.com\/cn\/%e6%97%8b%e8%bd%ac%e5%b9%b3%e8%a1%a1\/","title":{"rendered":"\u65cb\u8f6c\u5e73\u8861"},"content":{"rendered":"<p>\u672c\u6587\u89e3\u91ca\u4e86\u7269\u4f53\u5904\u4e8e\u65cb\u8f6c\u5e73\u8861\u72b6\u6001\u610f\u5473\u7740\u4ec0\u4e48\u3002\u60a8\u8fd8\u5c06\u53d1\u73b0\u65cb\u8f6c\u5e73\u8861\u4e0e\u7b2c\u4e8c\u5e73\u8861\u6761\u4ef6\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u540c\u6837\uff0c\u60a8\u5c06\u80fd\u591f\u770b\u5230\u65cb\u8f6c\u5e73\u8861\u7684\u793a\u4f8b\uff0c\u6700\u540e\uff0c\u60a8\u5c06\u80fd\u591f\u901a\u8fc7\u9010\u6b65\u89e3\u51b3\u7684\u7ec3\u4e60\u8fdb\u884c\u7ec3\u4e60\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-el-equilibrio-rotacional\"><\/span>\u4ec0\u4e48\u662f\u65cb\u8f6c\u5e73\u8861\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u7269\u7406\u5b66\u4e2d\uff0c<strong>\u65cb\u8f6c\u5e73\u8861<\/strong>\u662f\u6307\u7269\u4f53\u6ca1\u6709\u65cb\u8f6c\u6216\u6052\u5b9a\u65cb\u8f6c\u7684\u72b6\u6001\uff0c\u5373\u7269\u4f53\u5904\u4e8e\u9759\u6b62\u6216\u4ee5\u6052\u5b9a\u89d2\u901f\u5ea6\u65cb\u8f6c\u7684\u72b6\u6001\u3002<\/p>\n<p>\u5f53\u4f5c\u7528\u5728\u7269\u4f53\u4e0a\u7684\u529b\u77e9\uff08\u6216\u626d\u77e9\uff09\u603b\u548c\u4e3a\u96f6\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u65cb\u8f6c\u5e73\u8861\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-68e425c6419a56b8acdfd0805f80b077_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\somme M=0\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"52\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u5f53\u7269\u4f53\u5904\u4e8e\u65cb\u8f6c\u5e73\u8861\u65f6\uff0c\u610f\u5473\u7740\u5176\u89d2\u901f\u5ea6\u4e3a\u96f6\u6216\u6052\u5b9a\u3002\u56e0\u6b64\uff0c\u5728\u8be5\u72b6\u6001\u4e0b\u89d2\u52a0\u901f\u5ea6\u59cb\u7ec8\u4e3a\u96f6\u3002<\/p>\n<p>\u8bf7\u8bb0\u4f4f\uff0c\u5728\u7269\u7406\u5b66\u4e2d\uff0c\u65cb\u8f6c\u662f\u8eab\u4f53\u6539\u53d8\u5176\u65b9\u5411\u7684\u8fd0\u52a8\uff0c\u56e0\u6b64\u7269\u4f53\u53ef\u4ee5\u5728\u5176\u8f74\u4e0a\u65cb\u8f6c\uff0c\u540c\u65f6\u4fdd\u6301\u5728\u540c\u4e00\u70b9\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u533a\u5206\u65cb\u8f6c\u5e73\u8861\u7684\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u9759\u6001\u65cb\u8f6c\u5e73\u8861<\/strong>\uff1a\u5f53\u529b\u77e9\u4e4b\u548c\u4e3a\u96f6\u4e14\u7269\u4f53\u7684\u89d2\u901f\u5ea6\u4e3a\u96f6\u65f6\u3002<\/li>\n<li><strong>\u52a8\u6001\u65cb\u8f6c\u5e73\u8861<\/strong>\uff1a\u5f53\u529b\u77e9\u4e4b\u548c\u4e3a\u96f6\u4e14\u7269\u4f53\u7684\u89d2\u901f\u5ea6\u6052\u5b9a\uff08\u4e0d\u540c\u4e8e\u96f6\uff09\u65f6\u3002 <\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Segunda-condicion-de-equilibrio\"><\/span>\u7b2c\u4e8c\u4e2a\u5e73\u8861\u6761\u4ef6<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5f53\u7269\u4f53\u5904\u4e8e\u65cb\u8f6c\u5e73\u8861\u65f6\uff0c\u79f0<strong>\u7b2c\u4e8c\u4e2a\u5e73\u8861\u6761\u4ef6<\/strong>\u5f97\u5230\u6ee1\u8db3\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5f53\u7cfb\u7edf\u7684\u529b\u77e9\uff08\u6216\u529b\u5076\uff09\u4e4b\u548c\u4e3a\u96f6\u65f6\uff0c\u7b2c\u4e8c\u4e2a\u5e73\u8861\u6761\u4ef6\u5f97\u5230\u9a8c\u8bc1\u3002\u8bf7\u8bb0\u4f4f\uff0c\u4e0d\u5e94\u5c06\u529b\u7684\u529b\u77e9\u6a21\u6570\u76f8\u52a0\uff0c\u800c\u5e94\u5c06\u529b\u77e9\u76f8\u52a0\uff0c\u56e0\u6b64\u6bcf\u4e2a\u8f74\u7684\u529b\u77e9\u603b\u548c\u5e94\u4e3a\u96f6\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u8981\u9a8c\u8bc1\u7269\u4f53\u662f\u5426\u5904\u4e8e\u65cb\u8f6c\u5e73\u8861\uff0c\u5fc5\u987b\u5c06\u6bcf\u4e2a\u8f74\u7684\u529b\u77e9\u5206\u522b\u76f8\u52a0\uff0c\u5982\u679c\u6bcf\u4e2a\u8f74\u7684\u603b\u548c\u4e3a\u96f6\uff0c\u5219\u521a\u4f53\u5904\u4e8e\u65cb\u8f6c\u5e73\u8861\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-afbd9140b106ab074dab6852a6dc7f4b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\sum \\vv{M_x}=0 \\qquad \\sum\\vv{M_y}=0\\qquad \\sum\\vv{M_z}\" title=\"Rendered by QuickLaTeX.com\" height=\"25\" width=\"303\" style=\"vertical-align: -8px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Equilibrio-rotacional-y-traslacional\"><\/span>\u65cb\u8f6c\u548c\u5e73\u79fb\u5e73\u8861<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>\u5f53\u529b\u77e9\u603b\u548c\u4e0e\u529b\u603b\u548c\u4e3a\u96f6\u65f6\uff0c\u521a\u4f53\u5904\u4e8e\u65cb\u8f6c\u548c\u5e73\u79fb\u5e73\u8861\u3002<\/strong>\u6362\u53e5\u8bdd\u8bf4\uff0c\u5f53\u5408\u529b\u548c\u5408\u529b\u77e9\u4e3a\u96f6\u65f6\uff0c\u7269\u4f53\u5904\u4e8e\u5e73\u79fb\u548c\u65cb\u8f6c\u5e73\u8861\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>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7269\u4f53\u7684\u7ebf\u901f\u5ea6\u5c06\u4e3a\u96f6\u6216\u6052\u5b9a\uff0c\u5176\u89d2\u901f\u5ea6\u4e5f\u5c06\u4e3a\u96f6\u6216\u6052\u5b9a\uff0c\u56e0\u6b64\u5b83\u65e2\u6ca1\u6709\u7ebf\u52a0\u901f\u5ea6\u4e5f\u6ca1\u6709\u89d2\u52a0\u901f\u5ea6\u3002<\/p>\n<p>\u5e94\u8be5\u6307\u51fa\u7684\u662f\uff0c\u5f53\u7269\u4f53\u540c\u65f6\u5904\u4e8e\u529b\u5e73\u8861\u548c\u529b\u77e9\u5e73\u8861\u65f6<strong>\uff0c\u8be5\u7269\u4f53\u5c31\u88ab\u79f0\u4e3a\u5e73\u8861\u72b6\u6001<\/strong>\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplo-de-equilibrio-rotacional\"><\/span>\u65cb\u8f6c\u5e73\u8861\u793a\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u73b0\u5728\u60a8\u5df2\u7ecf\u4e86\u89e3\u4e86\u65cb\u8f6c\u5e73\u8861\u7684\u5b9a\u4e49\uff0c\u8fd9\u91cc\u6709\u4e00\u4e2a\u793a\u4f8b\u6765\u89e3\u91ca\u4ee5\u5b8c\u6210\u5bf9\u8fd9\u4e2a\u6982\u5ff5\u7684\u7406\u89e3\u3002<\/p>\n<p>\u65cb\u8f6c\u5e73\u8861\u7684\u4e00\u4e2a\u5178\u578b\u4f8b\u5b50\u662f\u5e73\u8861\u7cfb\u7edf\u3002\u5f53\u5929\u5e73\u4e24\u4fa7\u65bd\u52a0\u5b8c\u5168\u76f8\u540c\u7684\u91cd\u91cf\u65f6\uff0c\u5929\u5e73\u81c2\u505c\u6b62\u65cb\u8f6c\uff0c\u56e0\u6b64\u7cfb\u7edf\u5904\u4e8e\u65cb\u8f6c\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\/exemple-dequilibre-de-rotation.png\" alt=\"\u65cb\u8f6c\u5e73\u8861\" class=\"wp-image-354\" width=\"233\" height=\"233\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exemple-dequilibre-de-rotation-208x300.png 208w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exemple-dequilibre-de-rotation.png 610w\" sizes=\"auto, (max-width: 208px) 100vw, 208px\"><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejercicio-resuelto-equilibrio-rotalcional\"><\/span>\u7ec3\u4e60\u89e3\u51b3\u65cb\u8f6c\u5e73\u8861<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u4e00\u6839 10 m \u7684\u5355\u6760\u652f\u6491\u7740\u4e00\u4e2a\u8d28\u91cf\u4e3a 8 kg \u7684\u7269\u4f53\u3002\u77e5\u9053\u652f\u67b6\u548c\u60ac\u6d6e\u4f53\u4e4b\u95f4\u7684\u8ddd\u79bb\uff0c\u5982\u679c\u7cfb\u7edf\u5904\u4e8e\u65cb\u8f6c\u548c\u5e73\u79fb\u5e73\u8861\uff0c\u652f\u67b6\u65bd\u52a0\u7684\u529b\u662f\u591a\u5c11\uff1f <\/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-de-rotation.png\" alt=\"\u65cb\u8f6c\u5e73\u8861\u95ee\u9898\" class=\"wp-image-355\" width=\"339\" height=\"120\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-dequilibre-de-rotation-300x107.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/probleme-dequilibre-de-rotation.png 643w\" 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\">\u9996\u5148\uff0c\u6211\u4eec\u4f7f\u7528\u91cd\u529b\u516c\u5f0f\u6765\u8ba1\u7b97\u5355\u6760\u5fc5\u987b\u652f\u6491\u7684\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-eb480f5d32a9e25cefacd5f89d407580_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P=m\\cdot g=8\\cdot 9,81 =78,48 \\ N\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"244\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u56e0\u6b64\uff0c\u7cfb\u7edf\u7684\u81ea\u7531\u4f53\u56fe\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\/exercice-resolu-rotation-equilibre.png\" alt=\"\u65cb\u8f6c\u5e73\u8861\u7ec3\u4e60\u5df2\u89e3\u51b3\" class=\"wp-image-356\" width=\"340\" height=\"297\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-rotation-equilibre-300x261.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/exercice-resolu-rotation-equilibre.png 654w\" 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\u7cfb\u7edf\u5904\u4e8e\u529b\u5e73\u8861\u72b6\u6001\uff0c\u56e0\u6b64\u6240\u6709\u8fd9\u4e9b\u529b\u7684\u603b\u548c\u5fc5\u987b\u4e3a\u96f6\u3002\u5229\u7528\u8fd9\u4e2a\u5e73\u8861\u6761\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u5236\u5b9a\u4ee5\u4e0b\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-635096a57ce10781254f283c9807f64c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_A+F_B-P=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"136\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> \u53e6\u4e00\u65b9\u9762\uff0c\u8be5\u9648\u8ff0\u4e5f\u544a\u8bc9\u6211\u4eec\u7cfb\u7edf\u5904\u4e8e\u52a8\u91cf\u5e73\u8861\u72b6\u6001\u3002\u56e0\u6b64\uff0c\u5982\u679c\u6211\u4eec\u8003\u8651\u7cfb\u7edf\u4e2d\u4efb\u610f\u70b9\u7684\u529b\u77e9\u603b\u548c\uff0c\u7ed3\u679c\u5fc5\u5b9a\u4e3a\u96f6\uff0c\u5982\u679c\u6211\u4eec\u91c7\u7528\u4e24\u4e2a\u652f\u6491\u4e4b\u4e00\u7684\u53c2\u8003\u70b9\uff0c\u6211\u4eec\u5c06\u5f97\u5230\u4e00\u4e2a\u5177\u6709\u5355\u4e2a\u672a\u77e5\u6570\u7684\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-f1a6d56c3426e8d6c2e890b5e8f4a873_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"M(A)=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"79\" 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-922d5ff929e034db7a9e80d732b0b893_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-P\\cdot 6.5+F_B\\cdot (6.5+3.5)=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"233\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6c42\u89e3\u65b9\u7a0b\u4e2d\u7684\u672a\u77e5\u6570\u6765\u8ba1\u7b97\u652f\u6491 B \u65bd\u52a0\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-95596edf27bb6086c35473f55465416d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-78.48\\cdot 6.5+F_B\\cdot 10=0\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"197\" 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-953185a6ad4824b654b8a40e259bbd71_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_B=\\cfrac{78.48\\cdot 6.5}{10}\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"125\" 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-11c77ae25a2807aee7370166ab0eaf25_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_B=51.01 \\ N\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"109\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u83b7\u5f97\u7684\u503c\u4ee3\u5165\u5782\u76f4\u529b\u7684\u65b9\u7a0b\u6765\u77e5\u9053\u65bd\u52a0\u5728\u53e6\u4e00\u4e2a\u652f\u6491\u4e0a\u7684\u529b\u7684\u5f3a\u5ea6\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-635096a57ce10781254f283c9807f64c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_A+F_B-P=0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"136\" 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-db94d7dd9c18fdf7656ce98ee55f0c2b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_A+51.01-78.48=0\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"179\" 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-88d9c19a7f65d95a82b07e3a5e063322_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_A=27,47 \\ N\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"111\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end 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