Qhov nruab nrab ntawm huab hwm coj ceev yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Cov nruab nrab pawg yog ib lub tswv yim hais txog ib qho tshwj xeeb hauv ib qho system ntawm pawg uas txhua tus pawg ntawm qhov system tuaj yeem suav tias yog nyob. Cov nruab nrab pawg qhov nrawm yog qhov sib npaug ntawm txhua qhov mas momentum muab faib los ntawm tag nrho pawg ntawm qhov system.

Ntxiv mus, qhov kev taw qhia ntawm Center of mass yog dab tsi?

Tsab ntawv tsa suab ntawm Center ntawm Mass . Cov center-ntawm-mas (COM) yog ib qho taw tes ntawm tus qauv uas ua rau tus tsab ntawv tsa suab ntawm qhov khoom yog tias qhov khoom shrinks mus rau ib qho point pawg . Yog hais tias ib tug net quab yuam yog siv rau COM qhov tshwm sim tsab ntawv tsa suab yuav txhais (cov khoom yuav tsis tig).

Ib tug kuj yuav nug, puas qhov nrawm ntawm qhov chaw ntawm huab hwm coj hloov? Cov ceev ntawm qhov system center ntawm pawg ua tsis yog hloov , tsuav yog lub kaw lus kaw. Lub kaw lus txav zoo li txhua tus pawg yog concentrated ntawm ib qho chaw.

Tsis tas li ntawd, koj yuav nrhiav tau qhov nruab nrab ntawm pawg li cas?

Xaiv ib qho chaw siv sab nraud ntawm qhov khoom koj xav tau xam qhov nruab nrab ntawm pawg rau. Cov ntsiab lus no yog arbitrary tab sis yuav tsum tsim nyog nyob ze rau qhov khoom. Multiply pawg ntawm qhov khoom (M) los ntawm qhov kev ncua deb ntawm qhov khoom thiab qhov chaw siv (R).

Vim li cas qhov nruab nrab ntawm pawg tseem ceeb?

Center of Mass . Ib tug system ntawm hais muaj ib tug tshwj xeeb point hu ua lub nruab nrab pawg . Nco ntsoov tias cov pawg ntawm lub cev nruj yog M. xam qhov chaw ntawm lub nruab nrab pawg yog tseem ceeb vim nws tso cai rau koj los soj ntsuam cov teeb meem dynamics raws li cov lus tsa suab ntawm cov nruab nrab pawg.