Kayendedwe ndi kuthekera mphamvu

Mmodzi mwa makhalidwe a dongosolo lililonse ndi mphamvu yake kayendedwe ndi kuthekera. Ngati mphamvu iliyonse F amachita pa thupi pa zina mwa njira yotero kuti iwowa ndi anayambika, pali ntchito ntchito DA. Pankhaniyi, mtengo wa kayendedwe mphamvu Deuteronomo amakhala apamwamba, ntchito zambiri mumpanduko. M'mawu ena, tikhoza kulemba aone kuti pali:

DA = Deuteronomo

Popeza njira Dr, anayendayenda mwa thupi, ndi osauka nkhanza za m'banja liwiro, ntchito yachiwiri lamulo la Newton kwa mphamvu:

F = (nkhanza za m'banja / Deuteronomo) * mamita

Zikusonyezanso kuti lamulo angagwiritsidwe ntchito akamwedwa inertial dongosolo pakuyenerera. System kusankha zimakhudza mtengo wa mphamvu. Mu mayiko dongosolo SI, mphamvu amayezedwa joules (J).

Choncho, mphamvu kayendedwe wa particles kapena matupi, yodziwika ndi kusuntha liwiro V ndi misa m, ndi:

T = ((V * V) * m) / 2

Ndizachidziwikire kuti mphamvu kayendedwe anatsimikiza ndi liwiro ndi misa kuti kwenikweni ikuimira zoyenda ntchito.

Kayendedwe ndi kuthekera mphamvu n'zotheka kufotokoza chikhalidwe cha thupi. Ngati woyamba, monga zanenedwa, mwachindunji zokhudzana ndi gululi, yotsirizira umagwiritsidwa ntchito dongosolo la zimavuta matupi. Kayendedwe ndi kuthekera mphamvu zambiri ankaona Mwachitsanzo, pamene mphamvu ya kulumikiza thupi popanda ndi njira apaulendo. Pankhaniyi yekha ndiye koyamba ndi womaliza malo ofunika. Wotchuka Mwachitsanzo - mogwirizana yokoka. Koma ngati kuli kofunika ndi njira yodutsamo, mphamvu ndi dissipative (mikangano).

Mawu osavuta, mphamvu ingathandize angathe kuchita ntchito. Choncho, mphamvu izi zikhoza kuonedwa kuti ntchito imene m'pofunika kuti thupi kusuntha mfundo wina ndi mzake. Kuti ndi:

DA = A * Dr

Ngati mphamvu angathe ndiwo amaimira DP, ife kupeza:

DA = - DP

A mtengo zoipa limasonyeza kuti ntchito chifukwa kuchepa DP. Ntchito kudziwika DP n'zotheka kudziwa osati unit mphamvu F, komanso vekitala cha malangizo ake.

ndi kayendedwe kusintha mphamvu zonse kugwirizana ndi kuthekera a. Izi osavuta kumva ngati ife kumbukirani chilamulo cha kusamala mphamvu dongosolo. Mtengo okwana T + DP pamene thupi anawamvera nthawi akanali yemweyo. Choncho, kusintha kwa T zonse zikuchitika zikufanana ndi kusintha DP, zikuoneka kuti kuyenda mu mzake, umasintha.

Popeza kayendedwe ndi kuthekera mphamvu ndi cholukanalukana, ndalama zawo umaimira mphamvu zonse za dongosolo. Mokhudzana ndi tinthu ziri mphamvu mkati ndi zopezeka, mpaka osachepera ikukhudzana poyenda ndi mogwirizana.

Pamene akuchita kuwerengetsera osankhidwa chimango Buku, ndipo nthawi iliyonse umasinthasintha anatengedwa koyamba lapansi. Mofananamo, kudziwa kufunika kwa mphamvu angathe n'chotheka mu zone ya machitidwe a mphamvu zimenezi kuti pamene amagwira ntchito osadalira pa njira ya gulu la tinthu kapena thupi. Mu sayansi, mphamvu zimenezi zimatchedwa ndiwofatsa. Nthaŵi zonse zogwirizana ndi malamulo a kusamala mphamvu zonse.

Mfundo zosangalatsa: mu vuto kumene zotsatira kunja ndi kochepa kapena kuchepetsa, kapena kachitidwe pansi yophunzira poyesetsa boma kwake, pamene mphamvu yake angathe amamuchititsa ziro. Mwachitsanzo, mpira anaponyedwa umalandira malire a mphamvu yake kuthekera pa nsonga pamwamba pa njira yodutsamo, koma nthawi yomweyo wayamba kusuntha pansi, kusintha mphamvu anapeza mu gulu ntchito anachita. Iwo ayenera kudziŵika kuti mphamvu ndi kuthekera ndi nthaŵi mogwirizana kwa matupi osachepera awiri: Mwachitsanzo, chitsanzo ndi mpira pa zingamvekere kukula kwa dzikoli. The mphamvu kayendedwe kuchita masamu munthu mmodzi aliyense wa thupi ikuyenda.