Video: Koj piav Newton txoj cai thib ob rau cov menyuam li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ob txoj cai hais tias qhov loj dua ntawm ib yam khoom, lub zog ntau dua nws yuav siv sij hawm kom ceev cov khoom. Tseem muaj qhov sib npaug uas hais tias Force = huab hwm coj x acceleration lossis F = ma. Qhov no kuj txhais tau hais tias qhov nyuaj koj ncaws pob qhov deb nws yuav mus.
Cov lus nug tseem yog, Newton txoj cai thib ob yog dab tsi hauv cov ntsiab lus yooj yim?
Newton txoj cai thib ob hais tias acceleration ntawm ib tug particle yog nyob ntawm lub zog ua raws li qhov particle thiab particle qhov loj. Rau ib tug muab particle, yog hais tias lub net quab yuam yog nce, lub acceleration yog nce. Rau ib tug muab net quab yuam, qhov ntau npaum li cas ib tug particle muaj, qhov tsawg acceleration nws muaj.
Tsis tas li ntawd, Newton txoj cai ntawm kev txav chaw rau menyuam yaus yog dab tsi? Peb kev cai yog: Txoj cai ntawm inertia: Ib yam khoom thaum so yuav nyob ntawm so thiab ib qho khoom hauv tsab ntawv tsa suab yuav nyob hauv tsab ntawv tsa suab mus txog thaum lub zog ua kom nws txav los yog nres. Force sib npaug lub sij hawm acceleration: Lub quab yuam ib yam khoom muaj peev xwm yuav xam tau los ntawm kev muab nws loj npaum li cas los ntawm kev ceev nws yog ceev los yog qeeb.
Raws li qhov piv txwv ntawm Txoj Cai 2nd Txoj Cai Lij Choj yog dab tsi?
Yog tias koj siv tib lub zog los thawb lub tsheb thiab thawb lub tsheb, lub tsheb yuav muaj kev nrawm dua li lub tsheb, vim tias lub tsheb muaj qhov hnyav dua. ? Nws yooj yim dua rau thawb lub tawb nqa khoom dua li ib qho puv, vim tias tag nrho lub laub yuav khoom muaj ntau dua li qhov khoob.
Vim li cas Newton txoj cai thib ob tseem ceeb?
Newton Txoj Cai Thib Ob ntawm Motion F = ma yog heev tseem ceeb vim nws qhia txog kev sib raug zoo ntawm lub zog thiab kev txav. Nws tso cai rau koj los xam cov acceleration (thiab yog li ntawd tshaj tawm thiab txoj hauj lwm) ntawm ib yam khoom uas paub rog. Qhov no yog qhov tseem ceeb heev rau cov kws tshawb fawb, engineers, inventors, thiab lwm yam.
Pom zoo:
Txoj cai thib peb ntawm kev hais lus rau cov menyuam yog dab tsi?
Txoj cai thib peb hais tias rau txhua qhov kev ua, muaj qhov sib npaug thiab sib npaug. Qhov no txhais tau hais tias ib txwm muaj ob lub zog uas zoo ib yam. Lub zog no yog nyob rau hauv qhov tseeb opposite direction
Newton txoj cai thib 2 siv tau li cas rau cov tsheb?
Txoj cai thib ob: Thaum lub zog siv rau lub tsheb, qhov kev hloov ntawm kev txav yog proportional rau lub zog faib los ntawm qhov loj ntawm lub tsheb. Txoj cai no tau hais los ntawm qhov sib npaug nto moo F = ma, qhov twg F yog lub zog, m yog qhov loj ntawm lub tsheb, thiab a yog qhov nrawm, lossis hloov pauv, ntawm lub tsheb
Newton txoj cai thib 2 rau cov menyuam yog dab tsi?
Txoj cai thib ob hais tias qhov loj dua ntawm ib qho khoom, qhov ntau zog nws yuav siv sij hawm kom ceev cov khoom. Tseem muaj qhov sib npaug uas hais tias Force = huab hwm coj x acceleration lossis F = ma. Qhov no kuj txhais tau hais tias qhov nyuaj koj ncaws pob qhov deb nws yuav mus
Newton txoj cai ntawm kev txav mus li cas cuam tshuam rau cov menyuam coasters?
Thiab Newton thawj txoj cai ntawm kev txav mus los qhia tau hais tias ib qho khoom ntawm so yuav nyob twj ywm tshwj tsis yog tias muaj kev quab yuam sab nraud siv rau nws. Newton txoj cai thib peb ntawm tsab ntawv tsa suab hais tias, 'Rau txhua qhov kev txiav txim muaj qhov sib npaug thiab tawm tsam.' Yog li ntawd siv rau cov menyuam coaster, nruab nrab ntawm cov tsheb caij tsheb thiab khiav
Koj yuav daws li cas Newton txoj cai thib peb ntawm kev txav chaw?
Thaum twg ib lub cev tawm dag zog rau ntawm lub cev thib ob, thawj lub cev tau ntsib lub zog uas sib npaug ntawm qhov loj thiab rov qab mus rau lub zog uas nws tawm. Kev ua lej, yog tias lub cev A tawm dag zog → F ntawm lub cev B, ces B ib txhij ua lub zog − → F ntawm A, lossis hauv daim ntawv sib npaug vector, → FAB = − → FBA