Video: Cov khoom hnyav puas poob sai?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov khoom hnyav dua ua tsis yog poob sai dua ntais khoom thaum lawv poob los ntawm qhov siab yog tias tsis muaj kev tawm tsam los ntawm huab cua. Yog li, yog tias koj nyob hauv lub tshuab nqus tsev, ob yam yuav poob tib tus nqi. Yog li, tsuas yog qhov uas ua rau lub teeb ci poob qeeb dua yog qhov tsis kam ntawm huab cua.
Tsuas yog li ntawd, vim li cas cov khoom hnyav dua poob sai dua?
Teb 3: Hauv lub neej tiag tiag, cov khoom hnyav dua qee zaum poob sai tshaj qhov kaj khoom , tab sis tsis yog vim lub ntiajteb txawj nqus. Lub ntiajteb txawj nqus ua txhua yam khoom nce lawv ceev ntawm tib tus nqi, tsis hais seb lawv loj npaum li cas. Tab sis yog tias koj tso 2 yam sab nraud, cov huab cua molecules yuav qeeb ib yam ntau dua li lwm qhov.
Ib tug kuj nug, uas yuav ntaus hauv av ua ntej ib tug hnyav lossis lub teeb khoom? Hauv lwm lo lus, yog tias ob khoom yog tib qhov loj tab sis ib tug yog hnyav dua , cov hnyav dua ib tug muaj ntau dua qhov sib dua khoom . Yog li ntawd, thaum ob leeg khoom poob los ntawm tib qhov siab thiab tib lub sijhawm, cov khoom hnyav dua yuav tsum ntaus hauv av ua ntej lub teeb.
Kuj nug tias, Qhov hnyav puas cuam tshuam kev poob nrawm?
Mass ua tsis yog cuam tshuam tus ceev ntawm poob cov khoom, piv txwv tias tsuas muaj lub ntiajteb txawj nqus ua rau nws. Kab rov tav quab yuam siv ua tsis yog cuam tshuam qhov qis qis ntawm cov mos txwv - tsuas yog lub ntiajteb txawj nqus thiab kev sib txhuam (air resistance), uas yog tib yam rau ob lub mos txwv. Huab cua kuj ua rau plaub poob qeeb dua.
Puas yog txhua yam poob ntawm qhov nrawm?
Yog li ntawd, txhua yam khoom dawb poob ntawm tus nqi tib yam tsis hais lawv pawg. Vim tias 9.8 N / kg gravitational teb ntawm lub ntiaj teb nto ua rau 9.8 m / s / s acceleration ntawm ib qho khoom muab tso rau ntawd, peb feem ntau hu qhov piv no qhov acceleration ntawm lub ntiajteb txawj nqus.
Pom zoo:
Puas yog qhov hnyav lossis qhov hnyav?
Qhov loj ntawm ib yam khoom yog ib qho kev ntsuas ntawm cov khoom inertial khoom, los yog tus nqi ntawm cov khoom nws muaj. Qhov hnyav ntawm ib yam khoom yog ib qho kev ntsuas ntawm lub zog ntawm qhov khoom los ntawm lub ntiajteb txawj nqus, lossis lub zog xav tau los txhawb nws. Qhov rub ntawm lub ntiajteb txawj nqus ntawm lub ntiaj teb muab ib yam khoom ib tug downward acceleration ntawm txog 9.8 m / s2
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