{"id":1432,"date":"2000-01-03T14:14:36","date_gmt":"2000-01-03T06:14:36","guid":{"rendered":"http:\/\/www.qiusir.cn\/archives\/1432"},"modified":"2026-03-10T08:53:29","modified_gmt":"2026-03-10T00:53:29","slug":"3%e7%9b%b8%e4%ba%92%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.qiusir.com\/?p=1432","title":{"rendered":"\u00a702.\u9759\u529b\u5b66"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"2024\" src=\"http:\/\/www.qiusir.com\/wp-content\/gallery\/physics\/forcesvector1.jpg\" width=\"580\" class=\"framed\" \/><br \/>\n\u56e0\u4e3a$a^2+b^2=c^2$\uff0c\u6240\u4ee53\u00b14=5<\/p>\n<p>1\u3001\u91cd\u529b \u57fa\u672c\u76f8\u4e92\u4f5c\u7528<br \/>\n\u91cd\u529b\u548c\u4e07\u6709\u5f15\u529b\u7684\u5173\u7cfb<\/p>\n<p>2\u3001\u5f39\u529b<br \/>\n\u81ea\u7136\u754c\u7684\u56db\u79cd\u57fa\u672c\u4f5c\u7528\u529b\u662f\u4e0d\u9700\u8981\u63a5\u89e6\u5c31\u80fd\u8d77\u4f5c\u7528\u7684\u3002<br \/>\n\u5f39\u7c27\u526a\u77ed\uff0c\u4e32\u8054\u5e76\u8054\uff0c\u52b2\u5ea6\u7cfb\u6570.Hooke law<br \/>\n3\u3001\u6469\u64e6\u529b<br \/>\n$F_{f,s}\\le \\mu_sF_N$<br \/>\n<img decoding=\"async\" alt=\"2024\" src=\"https:\/\/www.qiusir.com\/wp-content\/gallery\/physics\/twtywlx2c15.png\" width=\"580\" class=\"framed\" \/><br \/>\n4\u3001\u529b\u7684\u5408\u6210<br \/>\n(F1+F2)^2<br \/>\n\u4e09\u89d2\u5f62\u6cd5\u5219\u3002<br \/>\n5\u3001\u529b\u7684\u5206\u89e3<br \/>\n6\u3001\u5e73\u8861<\/p>\n<p>\u5149\u6ed1\u7897\u91cc\u7ec6\u7ebf\u7684\u4e24\u4e2a\u7403\u7684\u53d7\u529b\uff0c\u6218\u9e3d\u540c\u5b66\u7684\u77e2\u91cf\u4e09\u89d2\u5f62\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u65e5\u8bed\u6559\u6750\u4e0a\u7684\u5206\u7c7b<br \/>\n\u25bc\u63a5\u89e6\u529b\u306e\u4f8b<br \/>\n\u3000\u5f35\u529b(Tension)\u3000T<br \/>\n\u3000\u5782\u76f4\u6297\u529b(Normal Reaction)\u3000N<br \/>\n\u3000\u6469\u64e6\u529b(Friction)\u3000f<br \/>\n\u3000\u5f3e\u6027\u529b\u3000kx<\/p>\n<p>\u25bc\u9060\u9694\u529b\u306e\u4f8b<br \/>\n\u3000\u91cd\u529b\u3000mg<br \/>\n\u3000\u9759\u96fb\u6c17\u529b\u3000qE<br \/>\n\u3000\u78c1\u529b<br \/>\n\u3000\u6838\u529b<\/p>\n<p>[\u925b\u76f4\u65b9\u5411]Tsin30\u00b0=W<br \/>\nHooke\u306e\u6cd5\u5247\uff08\u6cd5\u5219\u4e00\u8bf4\u6765\u81ea\u65e5\u8bed\u554a\uff1f\uff09<br \/>\nAtwood\u306e\u5668\u68b0<\/p>\n<p>$\\frac{1}{2}mv^2$<\/p>\n<p>\u6eda\u52a8\u6469\u64e6$F_r=\\frac{f}{r}F_N$\u6eda\u52a8\u6469\u64e6\u7cfb\u6570f\uff08\u91cf\u7eb2\u662f\u957f\u5ea6\uff09\u8868\u8fbe\u4e86\u652f\u6301\u529b$F_N$\u4e0e\u6469\u64e6\u529b\u77e9M\u4e4b\u95f4\u7684\u6bd4\u4f8b\u5173\u7cfb\u3002$M=r\\cdot F_r=fF_N$<br \/>\n<center><img decoding=\"async\" alt=\"\" src=\"http:\/\/www.qiusir.com\/wp-content\/gallery\/physics\/twltx2c3f1.png\" width=\"580\" class=\"framed\" \/><\/center><\/p>\n<p>\u4e00\u9053\u7acb\u4f53\u6a21\u578b\u7684\u6469\u64e6\u529b\u9898<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"SecV5dQube\"><p><a href=\"https:\/\/www.qiusir.com\/?p=19609\">\u4e00\u9053\u7acb\u4f53\u6a21\u578b\u7684\u6469\u64e6\u529b\u9898<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u300a \u4e00\u9053\u7acb\u4f53\u6a21\u578b\u7684\u6469\u64e6\u529b\u9898 \u300b\u2014\u6c42\u5e08\u5f97\u6559\u80b2\u5b9e\u9a8c\u5ba4\" src=\"https:\/\/www.qiusir.com\/?p=19609&#038;embed=true#?secret=kL1YeGE4Um#?secret=SecV5dQube\" data-secret=\"SecV5dQube\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><br \/>\n\u659c\u9762\u7f6e\u7269<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"5TLQ4PLYg6\"><p><a href=\"https:\/\/www.qiusir.com\/?p=1799\">\u659c\u9762\u7f6e\u7269<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u300a \u659c\u9762\u7f6e\u7269 \u300b\u2014\u6c42\u5e08\u5f97\u6559\u80b2\u5b9e\u9a8c\u5ba4\" src=\"https:\/\/www.qiusir.com\/?p=1799&#038;embed=true#?secret=07ny3HFvZX#?secret=5TLQ4PLYg6\" data-secret=\"5TLQ4PLYg6\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u56e0\u4e3a$a^2+b^2=c^2$\uff0c\u6240\u4ee53\u00b14=5 1\u3001\u91cd\u529b \u57fa\u672c\u76f8\u4e92\u4f5c\u7528 \u91cd\u529b\u548c\u4e07\u6709\u5f15\u529b\u7684\u5173\u7cfb 2\u3001\u5f39\u529b \u81ea\u7136\u754c &#8230; <a title=\"\u00a702.\u9759\u529b\u5b66\" class=\"read-more\" href=\"https:\/\/www.qiusir.com\/?p=1432\" aria-label=\"\u9605\u8bfb \u00a702.\u9759\u529b\u5b66\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5],"tags":[247,263],"class_list":["post-1432","post","type-post","status-publish","format-standard","hentry","category-physics","tag-physics","tag-teach"],"_links":{"self":[{"href":"https:\/\/www.qiusir.com\/index.php?rest_route=\/wp\/v2\/posts\/1432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qiusir.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qiusir.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qiusir.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qiusir.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1432"}],"version-history":[{"count":4,"href":"https:\/\/www.qiusir.com\/index.php?rest_route=\/wp\/v2\/posts\/1432\/revisions"}],"predecessor-version":[{"id":48307,"href":"https:\/\/www.qiusir.com\/index.php?rest_route=\/wp\/v2\/posts\/1432\/revisions\/48307"}],"wp:attachment":[{"href":"https:\/\/www.qiusir.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qiusir.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qiusir.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}