Video: Lo lus quab yuam li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
zog . Hauv physics, ib yam dab tsi uas ua rau muaj kev hloov pauv hauv kev txav ntawm ib qho khoom. Niaj hnub txhais ntawm zog (ib qho khoom loj sib npaug los ntawm nws qhov nrawm) tau muab los ntawm Isaac Newton hauv Newton txoj cai ntawm kev txav. Qhov feem paub chav tsev ntawm zog yog pound.
Xav txog qhov no, lub ntsiab lus tag nrho ntawm kev quab yuam yog dab tsi?
A zog yog kev thawb lossis rub rau ntawm ib qho khoom uas tshwm sim los ntawm qhov khoom sib cuam tshuam nrog lwm yam khoom. Thaum twg muaj kev sib cuam tshuam ntawm ob yam khoom, muaj a zog ntawm txhua yam khoom.
Tsis tas li ntawd, dab tsi ntawm kev hais lus yog quab yuam? ib feem ntawm kev hais lus : npe. Txhais 1: lub zog ua haujlwm, lub zog, lossis lub cev muaj zog. Cov zog ntawm nag xob nag cua tsoo cov ntoo.
Ib yam li ntawd, tej zaum koj yuav nug tias, siv zog txhais li cas?
kev ua ntawm noj ib yam los yog noj tswj ib yam dab tsi, tshwj xeeb tshaj yog siv zog los yog zog.
Hom lus twg yog yuam?
verb (siv nrog cov khoom), yuam , quab yuam. kom yuam, txwv, lossis yuam (tus kheej lossis ib tus neeg) ua ib yam dab tsi: mus quab yuam ib tug neeg raug liam kom lees txim. tsav los yog tawm tsam tiv thaiv: Nws yuam nws txoj kev los ntawm cov neeg coob coob.
Pom zoo:
Yuav ua li cas koj nrhiav tau lub sij hawm nrog impulse thiab quab yuam?
Ib qho impulse yog sib npaug rau qhov quab yuam ntawm cov khoom lub sij hawm lub sij hawm uas lub zog no tau siv. Hauv qab no, peb muab impulse los ntawm qhov sib npaug F = ma, uas los ntawm Newton txoj cai thib ob ntawm kev txav. Kawm peb kab hauv qab no thiab nyeem cov lus qhia hauv qab lawv
Yuav ua li cas koj ua hauj lwm tawm lub resultant quab yuam siv ib tug parallelogram ntawm rog?
Txhawm rau nrhiav qhov tshwm sim, koj yuav ua ib qho parallelogram nrog ob sab sib npaug ntawm ob lub zog siv. Cov kab pheeb ces kaum ntawm no parallelogram yuav muab sib npaug zos rau lub resultant quab yuam. Qhov no yog hu ua parallelogram of force law
Koj txhais li cas los ntawm kev quab yuam?
Drag Force. Lub zog rub yog lub zog tiv thaiv los ntawm kev txav ntawm lub cev los ntawm cov kua dej, xws li dej lossis cua. Lub zog quab yuam ua tawm tsam rau qhov kev taw qhia ntawm cov dej ntws tawm. Qhov no yog qhov txheeb ze tshaj tawm ntawm lub cev thiab cov kua dej
Vim li cas lub caij nplooj ntoos hlav quab yuam tsis zoo?
Lub caij nplooj ntoos hlav quab yuam yog hu ua ib tug restoringforce vim hais tias lub zog exerted los ntawm lub springis ib txwm nyob rau hauv opposite kev coj mus rau qhov chaw. Qhov no yog vim li cas thiaj muaj lub cim tsis zoo nyob rau hauv Hooke txoj cai sib npaug.Pulling down on a spring stretches the springdownward, which results in the spring exerting an upwardforce
Kev quab yuam cuam tshuam li cas?
Lub zog yog thawb, rub, lossis rub ntawm ib qho khoom uas cuam tshuam nws txoj kev txav. Qhov kev txiav txim los ntawm ib lub zog tuaj yeem ua rau ib qho khoom nrawm nrawm, qeeb qeeb, nres lossis hloov kev coj ua. Txij li thaum txhua qhov kev hloov pauv hauv qhov nrawm yog suav tias yog acceleration, nws tuaj yeem hais tau tias lub zog ntawm ib qho khoom ua rau acceleration ntawm ib qho khoom