Video: Dab tsi yog lub zog net ua rau ntawm qhov khoom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A net zog txhais tau tias yog tag nrho cov zog acting on ib khoom . Cov kab zauv hauv qab no yog cov lej ntawm N zog acting on ib khoom . Tej zaum yuav muaj ob peb zog acting on ib khoom , thiab thaum koj ntxiv tag nrho cov ntawd zog , qhov tshwm sim yog qhov peb hu ua net quab yuam ua rau ntawm qhov khoom.
Kuj paub, dab tsi yog lub zog net ntawm cov khoom?
Cov net zog yog vector sum ntawm tag nrho cov zog uas ua rau ib khoom . Hais tias yog, lub net zog yog qhov sum ntawm tag nrho cov zog , coj mus rau hauv tus account qhov tseeb tias a zog yog vector thiab ob zog ntawm qhov sib npaug ntawm qhov sib npaug thiab qhov sib txawv ntawm qhov kev taw qhia yuav tshem tawm ib leeg tawm.
Ib sab saum toj no, dab tsi yog lub zog net ua rau ntawm 10 kg dawb dov khoom? Lub ntsiab txhais ntawm dawb lub caij nplooj zeeg hais tias tsuas yog quab yuam ua on ib khoom yog lub ntiajteb txawj nqus. Yog li yog tias qhov no yog qhov koj txhais tau los ntawm ywj pheej poob ” ces lub ntiajteb txawj nqus yuav tsuas yog zog . Hauv koj rooj plaub nws yuav yog 98.1 N nqes. Qhov no yuav accelerate lub khoom ua 9,81m.
Tsis tas li ntawd kom paub yog, dab tsi yog tus qauv rau net force?
Thaum a zog yog siv rau ntawm lub cev, tsis tsuas yog siv zog ua yeeb yam muaj ntau lwm yam zog zoo li gravitational zog Fg, kev sib txhuam zog Ff thiab normal zog uas sib npaug rau lwm tus zog . Yog li ntawd, lub net force formula yog muab los ntawm, FNet = Fa + Fg + Ff + FN.
Newton's 3 txoj cai yog dab tsi?
Newton 's peb kev cai ntawm cov lus tsa suab yuav raug teev raws li hauv qab no: Txhua yam khoom nyob rau hauv ib lub xeev ntawm ib qho kev taw qhia yuav nyob twj ywm nyob rau hauv lub xeev ntawm tsab ntawv tsa suab tshwj tsis yog ib tug sab nraud quab yuam ua rau nws. Force sib npaug lub sij hawm loj acceleration . Rau txhua qhov kev txiav txim muaj qhov sib npaug thiab sib npaug.
Pom zoo:
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