{"id":20500,"date":"2025-07-07T18:00:54","date_gmt":"2025-07-07T11:00:54","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=20500"},"modified":"2025-07-08T13:36:37","modified_gmt":"2025-07-08T06:36:37","slug":"cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/","title":{"rendered":"C\u00f4ng th\u1ee9c t\u00ednh \u00e1p su\u1ea5t ch\u1ea5t r\u1eafn, l\u1ecfng, kh\u00ed v\u00e0 b\u00e0i t\u1eadp \u00e1p d\u1ee5ng"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Cong_thuc_tinh_toan_ap_suat_ran\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t r\u1eafn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Ap_luc_ran_la_gi\" >\u00c1p l\u1ef1c r\u1eafn l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Cong_thuc\" >C\u00f4ng th\u1ee9c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Ung_dung_vi_du\" >\u1ee8ng d\u1ee5ng v\u00ed d\u1ee5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Cong_thuc_tinh_toan_ap_suat_chat_long\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Cong_thuc-2\" >C\u00f4ng th\u1ee9c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Ung_dung_vi_du-2\" >\u1ee8ng d\u1ee5ng v\u00ed d\u1ee5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Cong_thuc_tinh_toan_ap_suat_khi\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t kh\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Cong_thuc-3\" >C\u00f4ng th\u1ee9c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-ap-suat-chat-ran-long-khi-va-bai-tap-ap-dung\/#Ung_dung_vi_du-3\" >\u1ee8ng d\u1ee5ng v\u00ed d\u1ee5<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>Trong Ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd 8, sinh vi\u00ean th\u01b0\u1eddng s\u1ebd g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c t\u00ednh to\u00e1n s\u1ed1 l\u01b0\u1ee3ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u00e1p l\u1ef1c. V\u00e0 \u0111\u1ec3 gi\u00fap h\u1ecd hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng r\u1ea5t su\u00f4n s\u1ebb c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p l\u1ef1c \u0111\u1ec3 gi\u1ea3i quy\u1ebft b\u00e0i t\u1eadp, kh\u1ec9 s\u1ebd t\u00f3m t\u1eaft ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p l\u1ef1c c\u1ee7a ch\u1ea5t r\u1eafn, ch\u1ea5t l\u1ecfng, kh\u00ed v\u00e0 \u0111\u01b0a ra m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp c\u1ee5 th\u1ec3. <\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_ap_suat_ran\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t r\u1eafn <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-tinh-ap-suat-chat-ran-1.jpg\" alt=\"\u00c1p l\u1ef1c r\u1eafn. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Sau \u0111\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn \u00e1p l\u1ef1c r\u1eafn.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_luc_ran_la_gi\"><\/span>\u00c1p l\u1ef1c r\u1eafn l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u00c1p l\u1ef1c c\u1ee7a ch\u1ea5t r\u1eafn xu\u1ea5t hi\u1ec7n do tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 r\u1eafn. C\u00e1c nguy\u00ean t\u1eed b\u00ean trong ch\u1ea5t r\u1eafn kh\u00f4ng di chuy\u1ec3n. Do \u0111\u00f3, s\u1ef1 thay \u0111\u1ed5i trong \u0111\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eafn s\u1ebd kh\u00f4ng t\u1ea1o ra \u00e1p l\u1ef1c. Tuy nhi\u00ean, tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t ch\u1ea5t r\u1eafn t\u1ea1i m\u1ed9t \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh s\u1ebd ho\u1ea1t \u0111\u1ed9ng tr\u00ean \u0111i\u1ec3m nh\u1ecdn. \u0110i\u1ec1u n\u00e0y g\u00e2y ra \u00e1p l\u1ef1c b\u00ean trong v\u1eadt r\u1eafn.<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, \u00e1p su\u1ea5t r\u1eafn \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 \u00e1p su\u1ea5t g\u00e2y ra b\u1edfi ch\u1ea5t r\u1eafn do \u00e1p su\u1ea5t t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb khu v\u1ef1c \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. L\u01b0u \u00fd, \u00e1p l\u1ef1c n\u00e0y ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng tr\u00ean v\u1eadt th\u1ec3 tr\u00ean b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc\"><\/span>C\u00f4ng th\u1ee9c <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u00c1p l\u1ef1c c\u1ee7a ch\u1ea5t r\u1eafn \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00f4ng th\u1ee9c:<\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #c2e0f4;border-color: #4E4C50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 98.6618%;text-align: center;border: 0.5px solid #4e4c50\">P = f\/s<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">F l\u00e0 \u00e1p l\u1ef1c l\u00ean ch\u1ea5t r\u1eafn (n)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S l\u00e0 khu v\u1ef1c b\u1eaft bu\u1ed9c (m\u00e9t vu\u00f4ng)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 \u00e1p su\u1ea5t (n\/m -m\u00b2 = 1Pa)<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ung_dung_vi_du\"><\/span>\u1ee8ng d\u1ee5ng v\u00ed d\u1ee5 <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 1: Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean b\u1ea3ng ngang l\u00e0 3kg. Di\u1ec7n t\u00edch c\u1ee7a ti\u1ebfp x\u00fac \u0111\u1ed1i t\u01b0\u1ee3ng v\u1edbi b\u1ea3ng l\u00e0 64 cm2. \u00c1p l\u1ef1c tr\u00ean b\u00e0n l\u00e0 bao nhi\u00eau?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c tr\u00ean b\u00e0n l\u00e0: <\/p>\n<p dir=\"ltr\">P = f\/s = 3\/0,064 = 46.875 (pa)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 2: M\u1ed9t tr\u00ecnh thu th\u1eadp th\u00f4ng tin n\u1eb7ng 36000n, khu v\u1ef1c ti\u1ebfp x\u00fac c\u1ee7a c\u00e1c chu\u1ed7i xe tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0 1,15 m2. \u00c1p l\u1ef1c c\u1ee7a chi\u1ebfc xe h\u00e0nh \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0 g\u00ec?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c c\u1ee7a chi\u1ebfc xe h\u00e0nh \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0:<\/p>\n<p dir=\"ltr\">P = F\/S = 3600\/1.15 = 3130 (PA)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 3: M\u1ed9t b\u1ec3 n\u1eb7ng 26 000N. T\u00ednh \u00e1p su\u1ea5t c\u1ee7a b\u1ec3 tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng, bi\u1ebft r\u1eb1ng khu v\u1ef1c ti\u1ebfp x\u00fac c\u1ee7a chu\u1ed7i v\u1edbi m\u1eb7t \u0111\u1ea5t l\u00e0 1,3m2. So s\u00e1nh \u00e1p l\u1ef1c \u0111\u00f3 v\u1edbi \u00e1p l\u1ef1c c\u1ee7a m\u1ed9t ng\u01b0\u1eddi n\u1eb7ng 450 N v\u1edbi di\u1ec7n t\u00edch ti\u1ebfp x\u00fac 2 feet v\u1edbi m\u1eb7t \u0111\u1ea5t 200 cm2?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c c\u1ee7a b\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng l\u00e0:<\/p>\n<p dir=\"ltr\">P1 = F1\/S1 = 26000\/1.3 = 2000 (n\/m2)<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c c\u1ee7a ng\u01b0\u1eddi h\u00e0nh \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng l\u00e0:<\/p>\n<p dir=\"ltr\">P2 = F2\/S2 = 450\/0,02 = 22500 (n\/m2)<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, \u00e1p l\u1ef1c c\u1ee7a b\u1ed9 t\u0103ng \u00e1p \u00e1p d\u1ee5ng cho b\u1ec1 m\u1eb7t \u0111\u01b0\u1eddng nh\u1ecf h\u01a1n \u00e1p l\u1ef1c c\u1ee7a ng\u01b0\u1eddi tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng.<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 4: T\u00ednh \u00e1p su\u1ea5t g\u00e2y ra b\u1edfi ng\u00f3n tay tr\u00ean kim, n\u1ebfu \u00e1p su\u1ea5t l\u00e0 3N v\u00e0 di\u1ec7n t\u00edch c\u1ee7a kim l\u00e0 0,0003 cm2<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c g\u00e2y ra b\u1edfi ng\u00f3n tay l\u00e0:<\/p>\n<p dir=\"ltr\">P = f\/s = 3\/3.10-8 = 100000000 (n\/m2)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 5: M\u1ed9t ng\u00f4i nh\u00e0 g\u1ea1ch c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 120 t\u1ea5n. M\u1eb7t \u0111\u1ea5t trong ng\u00f4i nh\u00e0 n\u01a1i ng\u00f4i nh\u00e0 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t t\u1ed1i \u0111a 100 000 N\/m2. T\u00ednh di\u1ec7n t\u00edch t\u1ed1i thi\u1ec3u c\u1ee7a m\u00f3ng.<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">Thay \u0111\u1ed5i: M = 120 t\u1ea5n = 120 000kg <\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, \u00e1p l\u1ef1c c\u1ee7a ng\u00f4i nh\u00e0 h\u00e0nh \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0:  <\/p>\n<p dir=\"ltr\">F = 1200000 N<\/p>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u00e1p l\u1ef1c c\u1ee7a ch\u1ea5t r\u1eafn c\u1ee7a ch\u00fang t\u00f4i: <\/p>\n<p dir=\"ltr\">P = f\/ss = f\/p = 12 (m2)<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_ap_suat_chat_long\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-tinh-ap-suat-chat-ran-2.jpg\" alt=\"\u00c1p l\u1ef1c l\u1ecfng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet) \" width=\"100%\"><\/p>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn \u00e1p l\u1ef1c l\u1ecfng<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc-2\"><\/span>C\u00f4ng th\u1ee9c <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u00c1p su\u1ea5t c\u1ee7a ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi s\u1ea3n ph\u1ea9m c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t v\u00e0 \u0111\u1ed9 s\u00e2u \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb \u0111i\u1ec3m c\u1ee7a \u00e1p su\u1ea5t x\u1ea3y ra v\u1edbi b\u1ec1 m\u1eb7t tho\u00e1ng kh\u00ed.<\/p>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng: <\/p>\n<table style=\"border-collapse: collapse;width: 100%;border-color: #4e4c50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 98.6618%;background-color: #c2e0f4;text-align: center;border: 0.5px solid #4e4c50\">P = d. H<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Ch\u1ee9ng minh c\u00f4ng th\u1ee9c:<\/p>\n<p dir=\"ltr\">P = f\/s = p\/s = (dv)\/s = (dsh)\/s = dh<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 c\u1ee7a ch\u1ea5t l\u1ecfng (N\/M\u00b3)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H l\u00e0 \u0111\u1ed9 s\u00e2u t\u1eeb \u0111i\u1ec3m \u00e1p su\u1ea5t \u0111\u1ebfn b\u1ec1 m\u1eb7t ch\u1ea5t l\u1ecfng (M) <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 \u00e1p l\u1ef1c c\u1ee7a ch\u1ea5t l\u1ecfng (PA) <\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ung_dung_vi_du-2\"><\/span>\u1ee8ng d\u1ee5ng v\u00ed d\u1ee5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 1: M\u1ed9t th\u1ee3 l\u1eb7n m\u1eb7c \u00e1o l\u1eb7n ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c t\u1ed1i \u0111a 300.000 N\/m2. Bi\u1ebft \u0111\u01b0\u1ee3c tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 10000N\/m3.<\/p>\n<p dir=\"ltr\">M\u1ed9t. C\u00f4ng nh\u00e2n c\u00f3 th\u1ec3 l\u1eb7n bao nhi\u00eau m\u00e9t nh\u1ea5t?<\/p>\n<p dir=\"ltr\">b. T\u00ednh \u00e1p su\u1ea5t c\u1ee7a n\u01b0\u1edbc tr\u00ean c\u1eeda s\u1ed5 k\u00ednh c\u1ee7a \u00e1o l\u1eb7n v\u1edbi di\u1ec7n t\u00edch 200cm2 khi l\u1eb7n s\u00e2u 25m.<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn: <\/p>\n<p dir=\"ltr\">M\u1ed9t. Theo c\u00f4ng th\u1ee9c \u00e1p su\u1ea5t l\u1ecfng:    <\/p>\n<p dir=\"ltr\">P = dh =&gt; h = p\/d = 300000\/10000 = 30 (m)<\/p>\n<p dir=\"ltr\">b. \u00c1p l\u1ef1c c\u1ee7a n\u01b0\u1edbc t\u00e1c \u0111\u1ed9ng l\u00ean c\u00e1nh c\u1eeda k\u00ednh quan s\u00e1t c\u1ee7a chi\u1ebfc \u00e1o l\u1eb7n l\u00e0:<\/p>\n<p dir=\"ltr\">P = DH = 25.10000 = 250000 (PA)   <\/p>\n<p dir=\"ltr\">P = F\/S =&gt; F = PS = 250000.0.02 = 5000 (n)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 2: M\u1ed9t c\u00e2y th\u00f4ng ch\u1ee9a n\u01b0\u1edbc bi\u1ec3n, m\u1ecdi ng\u01b0\u1eddi th\u00eam x\u0103ng v\u00e0o c\u00e0nh. B\u1ec1 m\u1eb7t m\u1edf \u1edf hai nh\u00e1nh ch\u00eanh l\u1ec7ch 18mm. T\u00ednh to\u00e1n chi\u1ec1u cao c\u1ee7a tr\u1ee5 x\u0103ng, cho th\u1ea5y tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc bi\u1ec3n l\u00e0 10300 N\/m3, c\u1ee7a x\u0103ng l\u00e0 7000N\/m3.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-tinh-ap-suat-chat-ran-4.jpg\" alt=\"\" width=\"400\" height=\"251\"><\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn: <\/p>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3: P1 = P2 D1.H1 = D2.H2<\/p>\n<p dir=\"ltr\">M\u1eb7t kh\u00e1c: H2 = H1-H<\/p>\n<p dir=\"ltr\">D1.H1 = D2. (H1-H)<\/p>\n<p dir=\"ltr\">H1 = (10300. 18\/1000) \/ (10300 &#8211; 7000) = 0,56 (m)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 3: M\u1ed9t b\u1ec3 h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u cao 1,5m. M\u1ecdi ng\u01b0\u1eddi ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc v\u00e0o b\u1ec3. \u00c1p su\u1ea5t c\u1ee7a n\u01b0\u1edbc t\u1ea1i \u0111i\u1ec3m l\u00e0 0,7m t\u1eeb d\u01b0\u1edbi c\u00f9ng l\u00e0:<\/p>\n<p dir=\"ltr\">A. 15000pa     <\/p>\n<p dir=\"ltr\">B. 7000pa      <\/p>\n<p dir=\"ltr\">C. 8000pa     <\/p>\n<p dir=\"ltr\">D. 23000pa<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn: Tr\u1ea3 l\u1eddi c<\/p>\n<p dir=\"ltr\">\u00c1p su\u1ea5t c\u1ee7a n\u01b0\u1edbc tr\u00ean \u0111i\u1ec3m 0,7m t\u1eeb d\u01b0\u1edbi c\u00f9ng c\u1ee7a th\u00f9ng l\u00e0:<\/p>\n<p dir=\"ltr\">P = dh = 10000. (1,5 &#8211; 0.7) = 8000 (n\/m2) = 8000 (pa)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 4: M\u1ed9t con t\u00e0u c\u00f3 m\u1ed9t l\u1ed7 nh\u1ecf \u1edf ph\u00eda d\u01b0\u1edbi. L\u1ed7 n\u00e0y c\u00e1ch b\u1ec1 m\u1eb7t n\u01b0\u1edbc 2,2m. M\u1ecdi ng\u01b0\u1eddi \u0111\u1eb7t \u00e1p l\u1ef1c v\u00e1 v\u00e0o l\u1ed7 t\u1eeb b\u00ean trong. C\u1ea7n bao nhi\u00eau l\u1ef1c \u0111\u1ec3 gi\u1eef b\u1ea3n v\u00e1 n\u1ebfu l\u1ed7 r\u1ed9ng 150 cm2 v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 10 000N\/m2?<\/p>\n<p dir=\"ltr\">A. 308n     <\/p>\n<p dir=\"ltr\">B. 330n<\/p>\n<p dir=\"ltr\">C. 450n     <\/p>\n<p dir=\"ltr\">D. 485n<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn: Tr\u1ea3 l\u1eddi b<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c g\u00e2y ra b\u1edfi n\u01b0\u1edbc t\u1ea1o ra m\u1ed9t khu v\u1ef1c \u0111\u00e2m th\u1ee7ng:<\/p>\n<p dir=\"ltr\">P = dh = 10000. 2.2 = 22000 (n\/m2)<\/p>\n<p dir=\"ltr\">L\u1ef1c t\u1ed1i thi\u1ec3u \u0111\u1ec3 gi\u1eef b\u1ea3ng l\u00e0:<\/p>\n<p dir=\"ltr\">  F = PS = 22000. 0,015 = 330 (n)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 5: M\u1ed9t c\u00e2y th\u00f4ng c\u00f3 hai nh\u00e1nh v\u00e0 1 Key K \u0111\u1ec3 t\u00e1ch hai nh\u00e1nh. C\u00e1c nh\u00e1nh l\u1edbn c\u00f3 nh\u1ecf g\u1ea5p \u0111\u00f4i so v\u1edbi c\u00e1c nh\u00e1nh nh\u1ecf. M\u1ecdi ng\u01b0\u1eddi \u0111\u1ed5 n\u01b0\u1edbc v\u00e0o nh\u00e1nh l\u1edbn c\u1ee7a chai, chi\u1ec1u cao c\u1ee7a c\u1ed9t n\u01b0\u1edbc l\u00e0 45cm. T\u00ecm chi\u1ec1u cao c\u1ee7a c\u1ed9t n\u01b0\u1edbc trong hai nh\u00e1nh sau khi m\u1edf kh\u00f3a K trong m\u1ed9t th\u1eddi gian. B\u1ecf qua kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t \u0111\u1ea7u n\u1ed1i hai con.<\/p>\n<p dir=\"ltr\">A. 25 cm     <\/p>\n<p dir=\"ltr\">B. 30 cm       <\/p>\n<p dir=\"ltr\">C. 40 cm     <\/p>\n<p dir=\"ltr\">D. 55 cm<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn: Tr\u1ea3 l\u1eddi b<\/p>\n<p dir=\"ltr\">G\u1ecdi khu v\u1ef1c c\u1ee7a \u1ed1ng nh\u1ecf l\u00e0 S, khu v\u1ef1c ph\u1ea7n \u1ed1ng l\u1edbn l\u00e0 2 gi\u00e2y. Sau khi m\u1edf kh\u00f3a t, c\u1ed9t n\u01b0\u1edbc trong hai nh\u00e1nh c\u00f3 c\u00f9ng h.<\/p>\n<p dir=\"ltr\">B\u1edfi v\u00ec th\u1ec3 t\u00edch n\u01b0\u1edbc trong t\u00e0u kh\u00f4ng thay \u0111\u1ed5i, n\u00ean th\u1ec3 t\u00edch n\u01b0\u1edbc trong nh\u00e1nh ban \u0111\u1ea7u b\u1eb1ng t\u1ed5ng th\u1ec3 t\u00edch n\u01b0\u1edbc trong hai nh\u00e1nh ti\u1ebfp theo<\/p>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3: 2s.45 = sh + 2s.h \u21d2 h = 30 (cm)<\/p>\n<p dir=\"ltr\">Xem th\u00eam: \u00c1p su\u1ea5t l\u1ecfng l\u00e0 g\u00ec? Nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0o c\u00f3 \u1ee9ng d\u1ee5ng n\u00e0o kh\u00f4ng?<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_ap_suat_khi\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t kh\u00ed <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-tinh-ap-suat-chat-ran-3.jpg\" alt=\"\u00c1p su\u1ea5t kh\u00ed. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Sau \u0111\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn \u00e1p l\u1ef1c kh\u00ed:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc-3\"><\/span>C\u00f4ng th\u1ee9c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u00c1p su\u1ea5t kh\u00f4ng kh\u00ed l\u00e0 \u00e1p su\u1ea5t g\u00e2y ra b\u1edfi tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a kh\u00f4ng kh\u00ed xung quanh ch\u00fang ta. C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t kh\u00ed t\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng. Tuy nhi\u00ean, \u00e1p su\u1ea5t c\u1ee7a kh\u00ed \u0111\u00e3 s\u1eed d\u1ee5ng \u0111\u01a1n v\u1ecb MMHG \u0111\u1ec3 ghi l\u1ea1i.<\/p>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t kh\u00ed:<\/p>\n<table style=\"border-collapse: collapse;width: 100%;border-color: #4e4c50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 98.6618%;background-color: #c2e0f4;text-align: center;border: 0.5px solid #4e4c50\">P = f\/s<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n (N\/M2), (PA), (PSI), (Bar), (MMHG)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">F l\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a h\u00e0nh \u0111\u1ed9ng l\u00ean b\u1ec1 m\u1eb7t \u00e9p (N)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u01b0\u1ee1ng b\u1ee9c (M2)<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ung_dung_vi_du-3\"><\/span>\u1ee8ng d\u1ee5ng v\u00ed d\u1ee5 <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 1: Khi \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed A, c\u1ed9t th\u1ee7y ng\u00e2n trong \u1ed1ng T\u00f4-ri-li c\u00f3 chi\u1ec1u cao 76cm. Bi\u1ebft \u0111\u01b0\u1ee3c tr\u1ecdng l\u1ef1c c\u1ee5 th\u1ec3 c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0 136000N\/m3. Sau \u0111\u00f3, \u1edf v\u1ecb tr\u00ed m\u1ed9t \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n l\u00e0 g\u00ec?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">C\u00f3: 76cm = 0,76m<\/p>\n<p dir=\"ltr\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng ch\u00fang ta: P = DH<\/p>\n<p dir=\"ltr\">\u00c1p su\u1ea5t kh\u00ed quy\u1ec3n t\u1ea1i \u0111i\u1ec3m A l\u00e0:<\/p>\n<p dir=\"ltr\">P = 136000.0.76 = 103360 (n\/m2) = 103360 (PA)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 2: M\u1ecdi ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n th\u00ed nghi\u1ec7m Torixenli \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u1edf \u0111\u1ea7u ng\u1ecdn h\u1ea3i \u0111\u0103ng. K\u1ebft qu\u1ea3 k\u1ebft qu\u1ea3 l\u00e0 95200PA, bi\u1ebft m\u1eadt \u0111\u1ed9 c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0 13600 kg\/m3. Chi\u1ec1u cao c\u1ee7a c\u1ed9t th\u1ee7y ng\u00e2n trong th\u00ed nghi\u1ec7m l\u00e0:<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c c\u1ee5 th\u1ec3 c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0:<\/p>\n<p dir=\"ltr\">d = 13600.10 = 136000 (n\/m3)<\/p>\n<p dir=\"ltr\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p su\u1ea5t c\u1ee7a ch\u1ea5t l\u1ecfng, ch\u00fang ta nh\u1eadn \u0111\u01b0\u1ee3c:<\/p>\n<p dir=\"ltr\">P = dh =&gt; h = p \/ d<\/p>\n<p dir=\"ltr\">V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, chi\u1ec1u cao c\u1ee7a c\u1ed9t th\u1ee7y ng\u00e2n l\u00e0:<\/p>\n<p dir=\"ltr\">H = 95200: 136000 = 0,7 (m) = 700 (mm)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 3: M\u1ecdi ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n th\u00ed nghi\u1ec7m Torixenli \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u1edf \u0111\u1ea7u ng\u1ecdn h\u1ea3i \u0111\u0103ng. Ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng chi\u1ec1u cao c\u1ee7a c\u1ed9t th\u1ee7y ng\u00e2n trong \u1ed1ng torixenli l\u00e0 730mm, bi\u1ebft m\u1eadt \u0111\u1ed9 c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0 13600kg\/m3. \u00c1p su\u1ea5t kh\u00ed quy\u1ec3n \u1edf \u0111\u00f3 l\u00e0 g\u00ec?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">Thay \u0111\u1ed5i 730mm = 0,73m<\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c c\u1ee5 th\u1ec3 c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0: <\/p>\n<p dir=\"ltr\">d = 13600.10 = 136000 (n\/m3)<\/p>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng: P = DH, ch\u00fang ta c\u00f3 \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n \u1edf \u0111\u1ec9nh n\u00fai:<\/p>\n<p dir=\"ltr\">P = dh = 136000.0.73 = 99280 (n\/m2)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 4: M\u1ecdi ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u1ed9t m\u00e9t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u cao. K\u1ebft qu\u1ea3 cho th\u1ea5y: d\u01b0\u1edbi ch\u00e2n n\u00fai m\u00e9t ch\u1ec9 75cmHg; Tr\u00ean \u0111\u1ec9nh n\u00fai m\u00e9t ch\u1ec9 71,5cmHg. N\u1ebfu tr\u1ecdng l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 c\u1ee7a kh\u00f4ng kh\u00ed kh\u00f4ng thay \u0111\u1ed5i v\u00e0 c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 12,5n\/m3, th\u00ec tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0 136000N\/m3, th\u00ec \u0111\u1ec9nh l\u00e0 bao nhi\u00eau m\u00e9t?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn:<\/p>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh \u00e1p su\u1ea5t ch\u1ea5t l\u1ecfng: P = DH, ch\u00fang ta ph\u1ea3i nh\u1eadn \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c \u1edf ch\u00e2n n\u00fai l\u00e0:<\/p>\n<p dir=\"ltr\">P = 136000.0.75 = 102000 (n\/m2)<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c \u1edf \u0111\u1ec9nh n\u00fai l\u00e0:<\/p>\n<p dir=\"ltr\">P = 136000.0,715 = 97240 (n\/m2)<\/p>\n<p dir=\"ltr\">V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t t\u1ea1i hai \u0111i\u1ec3m n\u00e0y l\u00e0:<\/p>\n<p dir=\"ltr\">P = 102000 &#8211; 97240 = 4760 (n\/m2)<\/p>\n<p dir=\"ltr\">Chi\u1ec1u cao c\u1ee7a ng\u1ecdn n\u00fai l\u00e0: h = p \/ d = 4760 \/ 12,5 = 380.8 (m)<\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 5: M\u1ed9t ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh n\u1eb7ng 60kg l\u00e0 cao 1,6 m, di\u1ec7n t\u00edch c\u01a1 th\u1ec3 trung b\u00ecnh l\u00e0 1,6m2, t\u00ednh to\u00e1n \u00e1p su\u1ea5t c\u1ee7a kh\u00ed quy\u1ec3n t\u00e1c \u0111\u1ed9ng l\u00ean ng\u01b0\u1eddi \u0111\u00f3 trong \u0111i\u1ec1u ki\u1ec7n ti\u00eau chu\u1ea9n. Bi\u1ebft \u0111\u01b0\u1ee3c tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a th\u1ee7y ng\u00e2n l\u00e0 136000 N\/m3. T\u1ea1i sao ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 ch\u1ecbu m\u1ed9t \u00e1p l\u1ef1c l\u1edbn nh\u01b0 v\u1eady m\u00e0 kh\u00f4ng c\u1ea3m th\u1ea5y \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u00e1p l\u1ef1c n\u00e0y?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn<\/p>\n<p dir=\"ltr\">Trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n l\u00e0 76 cmHg:<\/p>\n<p dir=\"ltr\">P = dh = 136000. 0,76 = 103360 (n\/m2)<\/p>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c \u00e1p l\u1ef1c, ch\u00fang t\u00f4i nh\u1eadn \u0111\u01b0\u1ee3c:<\/p>\n<p dir=\"ltr\">P = f\/sf = ps<\/p>\n<p dir=\"ltr\">\u00c1p l\u1ef1c m\u00e0 b\u1ea7u kh\u00f4ng kh\u00ed t\u00e1c \u0111\u1ed9ng l\u00ean c\u01a1 th\u1ec3 con ng\u01b0\u1eddi l\u00e0:<\/p>\n<p dir=\"ltr\">F = PS = 103360.1.6 = 165376 (n)<\/p>\n<p dir=\"ltr\">L\u00fd do ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng v\u00e0 kh\u00f4ng c\u1ea3m th\u1ea5y \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u00e1p l\u1ef1c n\u00e0y b\u1edfi v\u00ec b\u00ean trong c\u01a1 th\u1ec3 c\u0169ng c\u00f3 kh\u00f4ng kh\u00ed, v\u00ec v\u1eady \u00e1p l\u1ef1c ho\u1ea1t \u0111\u1ed9ng t\u1eeb b\u00ean ngo\u00e0i v\u00e0 b\u00ean trong \u0111\u1ec3 c\u00e2n b\u1eb1ng l\u1eabn nhau.<\/p>\n<p dir=\"ltr\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/p>\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t b\u00e0i vi\u1ebft t\u00f3m t\u1eaft c\u00e1c c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n \u00e1p su\u1ea5t c\u1ee7a ch\u1ea5t r\u1eafn, ch\u1ea5t l\u1ecfng v\u00e0 ch\u1ea5t khi. Ngo\u00e0i ra, b\u00e0i vi\u1ebft c\u0169ng cung c\u1ea5p m\u1ed9t s\u1ed1 lo\u1ea1i b\u00e0i t\u1eadp c\u1ee5 th\u1ec3 \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p h\u1ecdc t\u1eadp l\u00fd thuy\u1ebft v\u00e0 \u00e1p d\u1ee5ng n\u00f3 theo c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp. Hy v\u1ecdng, h\u1ecd s\u1ebd th\u1ef1c h\u00e0nh ch\u0103m ch\u1ec9 v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 cao trong ch\u1ee7 \u0111\u1ec1 n\u00e0y.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong Ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd 8, sinh vi\u00ean th\u01b0\u1eddng s\u1ebd g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c t\u00ednh to\u00e1n s\u1ed1 l\u01b0\u1ee3ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u00e1p l\u1ef1c. V\u00e0 \u0111\u1ec3 gi\u00fap h\u1ecd hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng r\u1ea5t su\u00f4n s\u1ebb c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u00e1p l\u1ef1c \u0111\u1ec3 gi\u1ea3i quy\u1ebft b\u00e0i t\u1eadp, kh\u1ec9 s\u1ebd t\u00f3m t\u1eaft ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 c\u00f4ng th\u1ee9c&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-20500","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=20500"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20500\/revisions"}],"predecessor-version":[{"id":25146,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20500\/revisions\/25146"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=20500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=20500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=20500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}