Yuav ua li cas koj pom qhov tshwm sim vector hauv physics?
Yuav ua li cas koj pom qhov tshwm sim vector hauv physics?

Video: Yuav ua li cas koj pom qhov tshwm sim vector hauv physics?

Video: Yuav ua li cas koj pom qhov tshwm sim vector hauv physics?
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Cov tshwm sim yog cov vector sum ntawm ob los yog ntau tshaj cov duab . Nws yog qhov tshwm sim ntawm kev ntxiv ob lossis ntau dua cov duab ua ke. Yog hloov chaw cov duab A, B, thiab C ntxiv ua ke, qhov tshwm sim yuav yog vector R. Raws li qhia hauv daim duab, vector R tuaj yeem txiav txim siab los ntawm kev siv qhov raug kos, ntsuas, vector daim duab ntxiv.

Ib yam li ntawd, koj ua li cas kos ib qho vector?

Kos tus tshwm sim los ntawm tus Tsov tus tw thawj vector mus rau lub taub hau kawg vector . Sau npe rau qhov no vector raws li Qhov tshwm sim los yog yooj yim R. Siv tus pas ntsuas, ntsuas qhov ntev ntawm tus tshwm sim thiab txiav txim siab nws qhov loj los ntawm kev hloov mus rau cov units tiag tiag siv qhov ntsuas (4.4 cm x 20 m / 1 cm = 88 m).

Kuj Paub, dab tsi yog tus qauv rau lub zog tshwm sim? Feem ntau, yog → F1, → F2, → F3 zog ua rau lub cev, lawv ua zog → Fis muab los ntawm: → F = → F1 + → F2 + → F3. Nyob ntawm tus naj npawb zog acting, ua tshwm sim tuaj yeem tau txais geometrically los ntawm kev siv txoj cai daim duab peb sab, txoj cai parallelogram lossis polygon txoj cai ntawm vector ntxiv.

Ib yam li ntawd, tus qauv ntawm kev tshem tawm yog dab tsi?

Taw qhia rau lub Kev khiav tawm thiab Acceleration Equation Nws nyeem: Kev khiav tawm sib npaug qhov qub tshaj tawm los ntawm lub sij hawm ntxiv rau ib nrab ntawm qhov acceleration multiplied los ntawm lub square ntawm lub sij hawm. Ntawm no yog ib qho piv txwv teeb meem thiab nws txoj kev daws teeb meem uas qhia txog kev siv qhov sib npaug: Ib qho khoom txav nrog qhov nrawm ntawm 5.0 m / s.

Dab tsi yog qhov tsis zoo vector?

A tsis zoo vector yog a vector uas cov ntsiab lus nyob rau hauv cov kev taw qhia opposite mus rau lub reference zoo coj. A tsis zoo vector yog a vector uas muaj qhov opposite direction mus rau lub reference zoo coj. Zoo li scalers, cov duab tuaj yeem muab ntxiv thiab rho tawm.

Pom zoo: