{"id":13271,"date":"2025-02-01T14:08:07","date_gmt":"2025-02-01T14:08:07","guid":{"rendered":"https:\/\/www.fizika-online.ru\/?page_id=13271"},"modified":"2025-02-01T15:05:22","modified_gmt":"2025-02-01T15:05:22","slug":"%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b8-%d0%bf%d0%be-%d1%81%d1%82%d0%b0%d1%82%d0%b8%d0%ba%d0%b5-%d0%b8-%d0%b3%d0%b8%d0%b4%d1%80%d0%be%d1%81%d1%82%d0%b0%d1%82%d0%b8%d0%ba%d0%b5-%d0%b7%d0%b0%d0%b4%d0%b0-38","status":"publish","type":"page","link":"https:\/\/www.fizika-online.ru\/?page_id=13271","title":{"rendered":"\u0417\u0430\u0434\u0430\u0447\u0438 \u043f\u043e \u0441\u0442\u0430\u0442\u0438\u043a\u0435 \u0438 \u0433\u0438\u0434\u0440\u043e\u0441\u0442\u0430\u0442\u0438\u043a\u0435. \u0417\u0430\u0434\u0430\u0447\u0430 \u0421\u0442\u0413\u0421\u04426"},"content":{"rendered":"<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u0417\u0430\u0434\u0430\u0447\u0430<\/strong><\/em>. \u0422\u0435\u043b\u043e \u043c\u0430\u0441\u0441\u043e\u0439 2 \u043a\u0433 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d\u043e \u043d\u0430 \u043d\u0438\u0442\u0438. \u041a \u0442\u0435\u043b\u0443 \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043b\u0438 \u0434\u0440\u0443\u0433\u0443\u044e \u043d\u0438\u0442\u044c \u0438 \u043e\u0442\u0442\u044f\u043d\u0443\u043b\u0438 \u0435\u0435 \u0432 \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u043c \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438. \u041d\u0430\u0439\u0434\u0438\u0442\u0435 \u0441\u0438\u043b\u0443 \u043d\u0430\u0442\u044f\u0436\u0435\u043d\u0438\u044f \u043d\u0438\u0442\u0438 \u0432 \u043d\u043e\u0432\u043e\u043c \u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0438 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f, \u0435\u0441\u043b\u0438 \u0441\u0438\u043b\u0430 \u043d\u0430\u0442\u044f\u0436\u0435\u043d\u0438\u044f \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u043d\u0438\u0442\u0438 \u0440\u0430\u0432\u043d\u0430 12 \u041d.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u0420\u0435\u0448\u0435\u043d\u0438\u0435. <\/strong><\/em>\u0421\u0438\u0441\u0442\u0435\u043c\u0443 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u0441\u0432\u044f\u0436\u0435\u043c \u0441 \u0417\u0435\u043c\u043b\u0435\u0439, \u0442\u0430\u043a\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u043d\u0435\u0440\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0439. \u0412\u044b\u043f\u043e\u043b\u043d\u0438\u043c \u0447\u0435\u0440\u0442\u0435\u0436 \u0441 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435\u043c \u0432\u0441\u0435\u0445 \u0441\u0438\u043b, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043d\u0430 \u0442\u043e\u0447\u043a\u0443 \u043f\u043e\u0434\u0432\u0435\u0441\u0430 \u0433\u0440\u0443\u0437\u0430 \u043a \u043d\u0438\u0442\u044f\u043c.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13272\" src=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/02\/2-7.jpg\" alt=\"\" width=\"291\" height=\"411\" srcset=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/02\/2-7.jpg 291w, https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/02\/2-7-212x300.jpg 212w\" sizes=\"(max-width: 291px) 100vw, 291px\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0417\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c \u043f\u0435\u0440\u0432\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\vec{T}_1+\\vec{T}_2+\\vec{P}=0$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0412 \u043f\u0440\u043e\u0435\u043a\u0446\u0438\u044f\u0445 \u043d\u0430 \u043a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0442\u043d\u044b\u0435 \u043e\u0441\u0438<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2\\, cos\\, \\alpha -T_1=0$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2\\, sin\\, \\alpha -P=0$.<\/span><\/p>\n<p>&nbsp;<\/p>\n<div id=\"yandex_rtb_R-A-1598022-3\"><\/div>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><script>window.yaContextCb.push(()=>{\n\tYa.Context.AdvManager.render({\n\t\t\"blockId\": \"R-A-1598022-3\",\n\t\t\"renderTo\": \"yandex_rtb_R-A-1598022-3\"\n\t})\n})\n<\/script><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u041c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u043a\u043e\u0441\u0438\u043d\u0443\u0441 \u0438 \u0441\u0438\u043d\u0443\u0441 \u0443\u0433\u043b\u0430 \u043e\u0442\u043a\u043b\u043e\u043d\u0435\u043d\u0438\u044f \u043d\u0438\u0442\u0438 \u043e\u0442 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u0438, \u0430 \u043c\u043e\u0436\u043d\u043e \u0438\u0437\u0431\u0430\u0432\u0438\u0442\u044c\u0441\u044f \u043e\u0442 \u044d\u0442\u0438\u0445 \u043a\u043e\u0441\u0438\u043d\u0443\u0441\u043e\u0432 \u0438 \u0441\u0438\u043d\u0443\u0441\u043e\u0432. \u0412\u0442\u043e\u0440\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0440\u043e\u0449\u0435, \u043c\u044b \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0438\u043c. \u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u0435\u0440\u0435\u043f\u0438\u0448\u0435\u043c \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f \u0432 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u043c \u0432\u0438\u0434\u0435<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2\\, cos\\, \\alpha =T_1$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2\\, sin\\, \\alpha =P$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0412\u043e\u0437\u0432\u043e\u0434\u0438\u043c \u0432 \u043a\u0432\u0430\u0434\u0440\u0430\u0442 \u043a\u0430\u0436\u0434\u043e\u0435 \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2^2\\, cos^2\\, \\alpha =T_1^2$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2^2\\, sin^2\\, \\alpha =P^2$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0421\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u043c \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u043d\u0430\u0445\u043e\u0434\u0438\u043c \u0438\u0441\u043a\u043e\u043c\u044b\u0439 \u043c\u043e\u0434\u0443\u043b\u044c \u0441\u0438\u043b\u044b \u043d\u0430\u0442\u044f\u0436\u0435\u043d\u0438\u044f \u043d\u0438\u0442\u0438, \u0443\u0447\u0438\u0442\u044b\u0432\u0430\u044f, \u0447\u0442\u043e \u0432\u0435\u0441 \u043d\u0435\u043f\u043e\u0434\u0432\u0438\u0436\u043d\u043e\u0433\u043e \u0433\u0440\u0443\u0437\u0430 $P=mg,\\: P=2 \\cdot 10=20$ \u041d<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2^2\\, cos^2\\, \\alpha+T_2^2\\, sin^2\\, \\alpha=T_1^2+P^2$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2^2(cos^2\\, \\alpha+sin^2\\, \\alpha)=T_1^2+P^2$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2^2=T_1^2+P^2$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2=\\sqrt{T_1^2+P^2}$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$T_2=\\sqrt{12^2+20^2}\\approx 23,32$\u00a0\u041d.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u041e\u0442\u0432\u0435\u0442: <\/strong><\/em>$\\approx 23,32$ \u041d.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0417\u0430\u0434\u0430\u0447\u0430. \u0422\u0435\u043b\u043e \u043c\u0430\u0441\u0441\u043e\u0439 2 \u043a\u0433 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d\u043e \u043d\u0430 \u043d\u0438\u0442\u0438. \u041a \u0442\u0435\u043b\u0443 \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043b\u0438 \u0434\u0440\u0443\u0433\u0443\u044e \u043d\u0438\u0442\u044c \u0438 \u043e\u0442\u0442\u044f\u043d\u0443\u043b\u0438 \u0435\u0435 \u0432 \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u043c \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438. \u041d\u0430\u0439\u0434\u0438\u0442\u0435 \u0441\u0438\u043b\u0443 \u043d\u0430\u0442\u044f\u0436\u0435\u043d\u0438\u044f \u043d\u0438\u0442\u0438 \u0432 \u043d\u043e\u0432\u043e\u043c \u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0438 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f, \u0435\u0441\u043b\u0438 \u0441\u0438\u043b\u0430 \u043d\u0430\u0442\u044f\u0436\u0435\u043d\u0438\u044f \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u043d\u0438\u0442\u0438 \u0440\u0430\u0432\u043d\u0430 12 \u041d. \u0420\u0435\u0448\u0435\u043d\u0438\u0435. \u0421\u0438\u0441\u0442\u0435\u043c\u0443 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u0441\u0432\u044f\u0436\u0435\u043c \u0441 \u0417\u0435\u043c\u043b\u0435\u0439, \u0442\u0430\u043a\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u043d\u0435\u0440\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0439. \u0412\u044b\u043f\u043e\u043b\u043d\u0438\u043c \u0447\u0435\u0440\u0442\u0435\u0436 \u0441 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435\u043c \u0432\u0441\u0435\u0445 \u0441\u0438\u043b, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043d\u0430 \u0442\u043e\u0447\u043a\u0443\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.fizika-online.ru\/?page_id=13271\">\u0427\u0438\u0442\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/13271"}],"collection":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13271"}],"version-history":[{"count":3,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/13271\/revisions"}],"predecessor-version":[{"id":13275,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/13271\/revisions\/13275"}],"wp:attachment":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}