Sayansi

Kumvetsetsa Mtunda
Mtunda ndi kutalika kwa njira yomwe chinthu chinayenda. Mtunda ndi kuchuluka kwa scalar, kuchuluka kwenikweni komwe kuli ndi kukula kokha komanso kopanda kolowera. Gawo lapadziko lonse la mtunda ndi mita, chidule cha m. Chizindikiro cha mtunda ndi s.

Tanthauzo la Kusamutsidwa
Kusamuka ndi kusintha kwa malo a chinthu. Kusamuka ndi kuchuluka kwa vekitala, kuchuluka kwa thupi komwe kuli ndi kukula ndi njira. Njira yosamuka ingafotokozedwe ngati njira yolunjika (kumpoto, kum'mawa, kum'mwera, kumadzulo, ndi zina zotero) kapena pogwiritsa ntchito mawu akuti kumanzere, kumanja, mmwamba, kapena pansi.

Werengani zambiri

Lamulo losunga mphamvu ya angular anati ngati mphindi ya mphamvu yochokerapo Mu chinthu cholimba chomwe chikuzungulira mtengo wake ndi zero ndiye mphamvu ya angular Chinthu cholimba chomwe chimayenda mozungulira nthawi zonse. Njira ya lamulo losunga mphamvu ya angular ingapezeke mwa masamu mwa kusintha njira ya lamulo lachiwiri la Newton la kuyenda kwa mphamvu ya angular.

Werengani zambiri

Ngati pali mphamvu yochokera pa chinthu chokhala ndi kulemera m, ndiye kuti chinthucho chimayenda molunjika ndi kufulumizitsa a. Ubale pakati pa mphamvu yochokera, kulemera ndi kufulumizitsa umawonekera kudzera mu equation:

Iyi ndi njira yofanana ya lamulo lachiwiri la Newton lomwe linaphunziridwa mu kalasi X.

Kuchuluka kwa thupi mu kayendedwe kozungulira ndikofanana ndi mphamvu yochokera pada kuyenda molunjika ndi mphindi ya mphamvu yochokerapoKuchuluka kwa thupi mu kayendedwe kozungulira ndikofanana ndi massa kuyenda molunjika ndi mphindi ya kutopaKuchuluka kwa thupi mu kayendedwe kozungulira ndikofanana ndi kufulumizitsa kuyenda molunjika ndi kuthamanga kwa angular.

Werengani zambiri

1. Kalembedwe kachikhalidwe
Ngati ntchito yochitidwa ndi mphamvu pamene chinthu chayamba kuyenda kuchokera pamalo ake oyamba mpaka chinthucho chibwerere pamalo ake oyamba ndi yofanana ndi zero, ndiye kuti mphamvuyo imatchedwa mphamvu yosunga zinthu.
Nazi zitsanzo za masitaelo okhwima.

1.1. Mphamvu yokoka
Taganizirani chinthu chomwe chikukwera molunjika mpaka kufika pamlingo wapamwamba kwambiri kenako n’kutsika kupita pamalo ake oyambirira. Pamene chikukwera molunjika mtunda wa h, mphamvu yokoka imakhala yosiyana ndi kusamuka kwa chinthucho. Chifukwa chakuti chili mosiyana ndi kusamuka kwa chinthucho, mphamvu yokoka imagwira ntchito yoipa pa chinthucho.
W = wh cos (180^o) = – wh = – mgh

Werengani zambiri

Kukangana kosasinthasintha ndi mphamvu yokangana yomwe imagwira ntchito pamwamba pa zinthu zomwe zikukhudzana wina ndi mnzake pamene zinthuzo sizikuyenda.

Werengani zambiri

Kukangana kwa kinetic ndi mphamvu yokangana yomwe imagwira ntchito pamwamba pa zinthu zomwe zikukhudzana wina ndi mnzake pamene zinthuzo zikuyenda.
Ngati mukufuna kudziwa mphamvu ya static friction, gwiritsani ntchito equation 1.5 a. Ngati mukufuna kudziwa kinetic friction coefficient, gwiritsani ntchito equation 1.5 b.

Werengani zambiri

Mphamvu ya Kinetic mu Kuyenda Kozungulira

Zinthu zomwe zikuyenda molunjika zili ndi mphamvu ya kayendedwe zomwe zitha kuwerengedwa pogwiritsa ntchito fomula iyi:
EK = ½ mv²
Zambiri:
EK = mphamvu ya kinetic (mayunitsi apadziko lonse lapansi ndi kg m²/s² kapena Joule)
m = kulemera (gawo lapadziko lonse ndi kilogalamu, chidule cha kg)
v = liwiro (gawo lapadziko lonse lapansi ndi mita/sekondi, chidule m/s)
Kuchuluka kwa thupi mu kayendedwe kozungulira ndikofanana ndi kulemera (m) pada kuyenda molunjika ndi mphindi ya kutopa (I)Kuchuluka kwa thupi mu kayendedwe kozungulira ndikofanana ndi liwiro (v) mu kayendedwe kozungulira ndi liwiro la angularChoncho, chinthu chomwe chimazungulira chimakhala ndi mphamvu ya kinetic yomwe ingawerengedwe pogwiritsa ntchito fomula iyi:

Werengani zambiri

Mphamvu ya Kinetic ndi Fizikiki

Ngati mphamvu ya neti ikugwira ntchito pa chinthu, chinthucho chimathamanga (ndi kusuntha). Chinthucho chikamathamanga, liwiro lake limasintha. Tinganene kuti ntchito yomwe mphamvu ya neti imachitidwa imagwirizana ndi liwiro loyamba komanso lomaliza la chinthucho.
Ntchito yochitidwa pa chinthu ndi mphamvu yosalekeza:
Khama lonse (W) = Mphamvu yotsatizana (F yonse) x kusamuka (s)
Lamulo Lachiwiri la Newton limati ngati pali mphamvu yonse yomwe ikugwira ntchito pa chinthu, chinthucho chidzathamanga.

Werengani zambiri

Zitsanzo 9 za Mafunso a Bizinesi

1. Mphamvu ya ma Newton 20 imagwiritsidwa ntchito pa chipika mpaka chipikacho chitasuntha mtunda wa mamita awiri. Ntchito yomwe mphamvu F imachita pa chipikacho ndi…
Zokambirana
Ndizodziwika kuti :
Mphamvu (F) = 20 N
Kusamuka (ma) = mamita awiri
Ngodya = 0 (njira ya mphamvu ndi yofanana ndi njira ya kusuntha kapena njira ya mphamvu ikugwirizana ndi njira ya kusuntha kotero kuti ngodya yopangidwa ndi mphamvu ndi kusuntha ndi zero)

Werengani zambiri

Mkhalidwe woyamba wa kulinganiza kwa thupi lolimba :
Lamulo Lachiwiri la Newton limati ngati mphamvu yochokera pa chinthu (chinthucho chimaonedwa ngati tinthu tating'onoting'ono) siili yofanana ndi zero, ndiye kuti chinthucho chidzayenda mofulumira nthawi zonse pomwe njira yoyendetsera chinthucho ndi yofanana ndi njira yoyendetsera mphamvu yochokera. Ngati mphamvu yochokera pa chinthucho ndi zero, ndiye kuti chinthucho chili pamalo opumulira kapena chinthucho chikuyenda pa liwiro losasintha.

Werengani zambiri