N\u1ebfu c\u00f3 ng\u01b0\u1eddi h\u1ecfi b\u1ea1n: Kh\u00f4ng nh\u00fan ch\u00e2n c\u00f3 th\u1ec3 nh\u1ea3y l\u00ean \u0111\u01b0\u1ee3c kh\u00f4ng? C\u00f3 l\u1ebd b\u1ea1n kh\u00f4ng tr\u1ea3 l\u1eddi ngay \u0111\u01b0\u1ee3c. V\u1eady th\u00ec h\u00e3y th\u1eed l\u00e0m m\u1ed9t c\u00e1i xem sao n\u00e0o. B\u1ea1n s\u1ebd nh\u1eadn th\u1ea5y r\u1eb1ng n\u1ebfu kh\u00f4ng nh\u00fan ch\u00e2n th\u00ec kh\u00f4ng sao nh\u1ea3y l\u00ean \u0111\u01b0\u1ee3c, g\u00e2n c\u1ed1t ho\u00e0n to\u00e0n nh\u01b0 kh\u00f4ng c\u00f3 ch\u1ed7 tri\u1ec3n khai. \u0110\u00f3 l\u00e0 \u0111i\u1ec1u g\u00ec v\u1eady?<\/p>\n\n\n\n
Ho\u00e1 ra l\u00e0 trong tr\u01b0\u1eddng h\u1ee3p t\u1ed5ng qu\u00e1t, chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt th\u1ec3 \u0111\u1ec1u ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy lu\u1eadt kh\u00e1ch quan nh\u1ea5t \u0111\u1ecbnh, \u0111\u00f3 l\u00e0 \u0111\u1ecbnh lu\u1eadt Newton. \u0110\u1ecbnh lu\u1eadt th\u1ee9 ba c\u1ee7a Newton cho ch\u00fang ta bi\u1ebft r\u1eb1ng: Khi v\u1eadt th\u1ec3 A t\u00e1c \u0111\u1ed9ng m\u1ed9t l\u1ef1c l\u00ean v\u1eadt th\u1ec3 B, t\u1ea5t nhi\u00ean v\u1eadt th\u1ec3 B c\u0169ng \u0111\u1ed3ng th\u1eddi t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt th\u1ec3 A m\u1ed9t ph\u1ea3n l\u1ef1c, \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c v\u00e0 ph\u1ea3n l\u1ef1c b\u1eb1ng nhau, ng\u01b0\u1ee3c chi\u1ec1u nhau v\u00e0 \u1edf c\u00f9ng tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng. V\u00ed d\u1ee5 nh\u01b0 khi v\u1ed7 tay, b\u00e0n tay ph\u1ea3i t\u00e1c \u0111\u1ed9ng l\u00ean b\u00e0n tay tr\u00e1i m\u1ed9t l\u1ef1c, b\u00e0n tay tr\u00e1i \u0111\u1ed3ng th\u1eddi c\u0169ng t\u00e1c \u0111\u1ed9ng l\u1ea1i l\u00ean b\u00e0n tay ph\u1ea3i m\u1ed9t l\u1ef1c; \u0111\u1ec3 quy\u1ec3n s\u00e1ch l\u00ean b\u00e0n, s\u00e1ch c\u00f3 l\u1ef1c \u00e9p xu\u1ed1ng b\u00e0n th\u00ec \u0111\u1ed3ng th\u1eddi m\u1eb7t b\u00e0n c\u0169ng sinh ra m\u1ed9t l\u1ef1c \u0111\u1ee1 \u0111\u1ed1i v\u1edbi quy\u1ec3n s\u00e1ch. Ch\u00fang \u0111\u1ec1u l\u00e0 l\u1ef1c v\u00e0 ph\u1ea3n l\u1ef1c.<\/p>\n\n\n\n
Ch\u00fang ta mu\u1ed1n t\u1eeb m\u1eb7t \u0111\u1ea5t nh\u1ea3y m\u1ed9t c\u00e1i, th\u00ec ph\u1ea3i l\u00e0m cho m\u1eb7t \u0111\u1ea5t t\u00e1c d\u1ee5ng m\u1ed9t l\u1ef1c l\u00ean ch\u00fang ta. Nh\u01b0ng l\u00e0m th\u1ebf n\u00e0o m\u1edbi c\u00f3 th\u1ec3 khi\u1ebfn cho m\u1eb7t \u0111\u1ea5t t\u00e1c \u0111\u1ed9ng l\u00ean ch\u00fang ta m\u1ed9t l\u1ef1c nh\u1ec9? \u0110i\u1ec1u \u0111\u00f3 \u0111\u00f2i h\u1ecfi ch\u00fang ta ph\u1ea3i t\u00e1c \u0111\u1ed9ng l\u00ean m\u1eb7t \u0111\u1ea5t m\u1ed9t l\u1ef1c tr\u01b0\u1edbc \u0111\u00e3. Ch\u00fang ta nh\u00fan ch\u00e2n, th\u1ea5p ng\u01b0\u1eddi xu\u1ed1ng r\u1ed3i m\u1edbi nh\u1ea3y l\u00ean, t\u1ee9c l\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u01a1 b\u1eafp c\u1ee7a ch\u00e2n, l\u00e0m c\u01a1 b\u1eafp co l\u1ea1i t\u00e1c \u0111\u1ed9ng m\u1ed9t l\u1ef1c l\u00ean m\u1eb7t \u0111\u1ea5t. Nh\u01b0 v\u1eady, m\u1eb7t \u0111\u1ea5t s\u1ebd \u0111\u1ed3ng th\u1eddi sinh ra m\u1ed9t ph\u1ea3n l\u1ef1c h\u01b0\u1edbng l\u00ean tr\u00ean \u0111\u1ed1i v\u1edbi ch\u00fang ta. Nh\u1edd v\u00e0o ph\u1ea3n l\u1ef1c \u0111\u00f3, ch\u00fang ta nh\u1ea3y l\u00ean \u0111\u01b0\u1ee3c. C\u01a1 b\u1eafp c\u1ee7a ch\u00e2n t\u00e1c \u0111\u1ed9ng l\u00ean m\u1eb7t \u0111\u1ea5t m\u1ed9t l\u1ef1c c\u00e0ng l\u1edbn, ph\u1ea3n l\u1ef1c c\u1ee7a m\u1eb7t \u0111\u1ea5t \u0111\u1ed1iv\u1edbi ch\u00fang ta c\u0169ng c\u00e0ng l\u1edbn, v\u00ec v\u1eady, nh\u1ea3y \u0111\u01b0\u1ee3c c\u00e0ng cao. N\u1ebfu kh\u00f4ng nh\u00fan ch\u00e2n, c\u01a1 b\u1eafp c\u1ee7a ch\u00e2n s\u1ebd kh\u00f4ng c\u00f3 c\u00e1ch g\u00ec sinh ra l\u1ef1c \u0111\u1ed1i v\u1edbi m\u1eb7t \u0111\u1ea5t th\u00ec m\u1eb7t \u0111\u1ea5t c\u0169ng s\u1ebd kh\u00f4ng sinh ra ph\u1ea3n l\u1ef1c \u0111\u1ed1i v\u1edbi ch\u00fang ta, cho n\u00ean kh\u00f4ng nh\u1ea3y l\u00ean \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
Khi m\u1ed9t chi\u1ebfc thuy\u1ec1n mu\u1ed1n r\u1eddi b\u1ebfn, ng\u01b0\u1eddi tr\u00ean thuy\u1ec1n d\u00f9ng s\u00e0o tre ch\u1ed1ng v\u00e0o b\u1edd, l\u1ef1c ch\u1ed1ng c\u00e0ng l\u1edbn, thuy\u1ec1n r\u1eddi b\u1ebfn c\u00e0ng xa. \u0110\u00f3 c\u0169ng l\u00e0 quy lu\u1eadt c\u1ee7a l\u1ef1c v\u00e0 ph\u1ea3n l\u1ef1c.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: \u0110\u1ecbnh lu\u1eadt th\u1ee9 ba c\u1ee7a Newton; L\u1ef1c; Ph\u1ea3n l\u1ef1c.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
N\u1ebfu c\u00f3 ng\u01b0\u1eddi h\u1ecfi b\u1ea1n: Kh\u00f4ng nh\u00fan ch\u00e2n c\u00f3 th\u1ec3 nh\u1ea3y l\u00ean \u0111\u01b0\u1ee3c kh\u00f4ng? C\u00f3 l\u1ebd b\u1ea1n kh\u00f4ng tr\u1ea3 l\u1eddi ngay \u0111\u01b0\u1ee3c. V\u1eady th\u00ec h\u00e3y th\u1eed l\u00e0m m\u1ed9t c\u00e1i xem sao n\u00e0o. B\u1ea1n s\u1ebd nh\u1eadn th\u1ea5y r\u1eb1ng n\u1ebfu kh\u00f4ng nh\u00fan ch\u00e2n th\u00ec kh\u00f4ng sao nh\u1ea3y l\u00ean \u0111\u01b0\u1ee3c, g\u00e2n c\u1ed1t ho\u00e0n to\u00e0n nh\u01b0 kh\u00f4ng c\u00f3 ch\u1ed7 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-5523","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=5523"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5523\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}