Angular Velocity vs Tangential Velocity
Angular tshaj tawm thiab tangential tshaj tawm yog ob lub ntsiab lus tseem ceeb hauv kev txav ntawm cov teeb meem. Lub Scope ntawm tsab xov xwm no yog los piav txog ob lub ntsiab lus, qhov nrawm nrawm thiab tangential tshaj tawm, thiab nthuav qhia qhov sib txawv ntawm lawv.
Angular Velocity yog dab tsi?
Angular tshaj tawm yog ib qho kev tshwm sim uas tau tham hauv cov lus tsa suab. Cov lus tsa suab zoo li cov hniav ntawm lub kiv cua tig los yog lub log khiav muaj cov lus tsa suab. Lub kaum sab xis radial yog siv los piav qhia lub angular motion. Ib sab ntawm lub kaum sab xis txav nrog cov khoom raws li lwm qhov tseem nyob nrog kev hwm rau lub ntiaj teb. Lub kaum sab xis yog hu ua angular displacement. Tus nqi ntawm kev hloov ntawm lub kaum sab xis yog lub npe hu ua angular tshaj tawm, thiab tus nqi ntawm kev hloov ntawm lub kaum sab xis yog hu ua angular acceleration. Lub angular tshaj tawm yog qhia nyob rau hauv radians ib ob los yog revolutions ib ob. Ib qho kev hloov pauv ntawm qhov nrawm nrawm ntawm ib qho khoom yuav tsum muaj lub zog sab nraud ua rau lub cev. Lwm cov cuab yeej sib tham nrog lub angular tshaj tawm yog lub angular momentum. Angular momentum yog sib npaug rau cov khoom ntawm lub sij hawm ntawm inertial ntawm cov khoom hais txog lub rotational axis thiab lub angular tshaj tawm. Lub zog rotational kinetic ntawm lub cev yog sib npaug rau cov khoom ntawm lub sijhawm ntawm inertia thiab lub kaum sab xis tshaj tawm squared faib los ntawm ob. Angular velocity yog qhov tsim nyog kom muaj nuj nqis uas ua rau peb pom tias qhov khoom txav nrawm npaum li cas. Qhov no feem ntau yog txhais los ntawm ω.
Tangential Velocity yog dab tsi?
Txhawm rau nkag siab lub tswv yim ntawm tangential tshaj tawm, ib tus yuav tsum xub nkag siab lub tswv yim ntawm kev nrawm hauv Cartesian kev tswj hwm. Hauv daim ntawv vector, qhov nrawm tuaj yeem txhais tau tias yog tus nqi hloov pauv ntawm txoj haujlwm vector. Yog tias ib qho khoom ua raws li txoj hauv kev nkhaus, qhov nrawm ntawm cov khoom hloov pauv vim ob qho tib si, tus nqi hloov pauv ntawm qhov chaw vector thiab kev hloov pauv. Ib txoj kab tangent mus rau ib qho nkhaus yog txoj kab ncaj nraim uas yog thaum uas tig mus rau ib qho me me ntawm qhov nkhaus nyob ib ncig ntawm qhov taw tes qhov tangential yog kos. Lub instantaneous linear tshaj tawm ntawm cov khoom yog sib npaug rau tangential tshaj tawm. Nyob rau hauv ib tug linear tsab ntawv tsa suab, txij li thaum lub tangential tshaj tawm thiab lub linear tshaj tawm yog parallel, lub tangential tshaj tawm yog ib txwm nyob rau hauv ib tug ncaj kab. Rau cov lus tsa suab uas tsis yog-linear, ib lub zog yuav tsum tau hloov qhov kev taw qhia ntawm qhov nrawm ntawm qhov khoom. Chav tsev ntawm tangential tshaj tawm yog meters ib ob. Rau ib lub voj voog sib xws, yog tias lub zog ntawm qhov khoom thiab qhov chaw raug tshem tawm, cov khoom yuav txav mus rau qhov kev taw qhia ntawm tangential tshaj tawm. Rau ib qho khoom txav ntawm txoj kev ncig nrog lub vojvoog r thiab qhov loj m nrog angular tshaj tawm ω, qhov tangential tshaj tawm yog sib npaug rau lub vojvoog thiab cov khoom nrawm nrawm.
Dab tsi yog qhov txawv ntawm qhov nrawm nrawm thiab qhov nrawm nrawm?
• Angular tshaj tawm yog cov cuab yeej angular, uas ntsuas hauv radians ib ob.
• Tangential tshaj tawm yog cov cuab yeej linear ntsuas hauv meters ib ob.
• Rau ib lub vojvoog muab, lub kaum sab xis tshaj tawm thiab qhov tangential tshaj tawm yog proportional.
