Koj yuav daws li cas rau centripetal acceleration?
Koj yuav daws li cas rau centripetal acceleration?

Video: Koj yuav daws li cas rau centripetal acceleration?

Video: Koj yuav daws li cas rau centripetal acceleration?
Video: Thaum ntsib kev nyuaj siab koj yuav daws li cas 2024, Kaum ib hlis
Anonim

Cov centripetal ('centre-nrhiav') kev ceev yog txoj kev txav mus rau hauv qhov chaw ntawm lub voj voog. Cov kev ceev yog sib npaug rau lub square ntawm lub nrawm, muab faib los ntawm lub vojvoog ntawm txoj kev ncig.

Tib neeg kuj nug, dab tsi yog qhov qhia rau centripetal acceleration?

ac = v2r a c = v 2 r, uas yog kev ceev ntawm ib yam khoom nyob rau hauv ib lub voj voog ntawm lub voj voog r ntawm ib tug ceev v. Yog li, centripetal acceleration yog ntau dua nyob rau hauv high speeds thiab nyob rau hauv ntse nkhaus (lub vojvoog me me), raws li koj tau pom thaum tsav tsheb.

Yuav ua li cas yog lub formula rau centripetal acceleration derived? Deriving tus qauv centripetal acceleration

  1. Peb tuaj yeem suav cov arc ntev s raws li ob qho kev ncua deb (nruab nrab = tus nqi * lub sijhawm = v Δt) thiab siv lub ntsiab lus ntawm radian (arc = radius * kaum hauv radians = r Δθ)
  2. Lub angular tshaj tawm ntawm cov khoom yog li v / r (hauv radians ib chav tsev ntawm lub sijhawm.)
  3. Nco ntsoov qhov kev dhau los ntawm kev txhaum mus rau cos yog los ntawm l'Hôpital txoj cai.

Tsis tas li ntawd, dab tsi yog qhov ua rau centripetal acceleration?

A centripetal Lub zog muaj peev xwm muab tau los ntawm lub ntiajteb txawj nqus (orbits), tus nqi hluav taws xob (electron orbits around a nucleus) lossis los ntawm ib txoj hlua (ib yam dab tsi raug nplawm ib ncig ntawm ib txoj hlua). Yog li ntawd, rau lub voj voog yuav tsum muaj lub zog (nrog rau lwm yam ua rau ) uas yog coj mus rau ib qho taw tes, lub cntre.

Koj txhais li cas los ntawm acceleration?

Lub ntsiab txhais ntawm kev ceev yog: Kev nrawm yog vector kom muaj nuj nqis uas txhais tau tias yog tus nqi ntawm qhov khoom hloov nws qhov nrawm. Ib yam khoom yog ceev yog nws hloov nws qhov nrawm. vam tias nws yuav pab tau koj.

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