Video: Yuav ua li cas koj thiaj paub tias angular momentum yog kev txuag?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib yam li linear momentum yog kev txuag thaum tsis muaj zog sab nraud, angular zog yog tas li los yog khaws tseg thaum net torque yog xoom. Yog kev hloov hauv angular zog ΔL yog xoom, ces tus angular zog yog tas li; yog li ntawd, → L = tsis tu ncua L → = tsis tu ncua ( thaum net t = 0).
Tom qab ntawd, nws txhais li cas rau lub zog angular kom txuag tau?
Hauv physics, angular zog (tsis tshua muaj, lub sijhawm ntawm lub zog los yog rotational lub zog ) yog qhov sib npaug sib npaug ntawm linear lub zog . Nws yog ib qho tseem ceeb kom muaj nuj nqis hauv physics vim nws yog ib khaws cia kom muaj nuj nqis - tag nrho angular zog ntawm lub kaw lus kaw tseem nyob tas li.
Qhov thib ob, yog angular momentum txuag nrog kev sib txhuam? 2 Teb. Cov angular zog ntawm txhua disk tus kheej tsis yog khaws cia , txawm li cas los xij angular zog ntawm ob lub disks yog khaws cia vim tias tsis muaj torques sab nraud ua haujlwm. Muaj cov rog sab hauv, uas yog qhov no, kev sib txhuam , tab sis qhov ntawd tsis muaj teeb meem.
Qhov sib thooj, puas yog lub zog angular ib txwm khaws cia?
Momentum yog vector, taw tes rau tib txoj kev raws li qhov tshaj tawm. Angular zog muaj lub cim L, thiab muab los ntawm kab zauv: tib yam li linear lub zog yog ib txwm khaws cia thaum tsis muaj lub zog ua haujlwm, angular zog yog khaws cia thaum tsis muaj net torque.
Yuav ua li cas yog hais tias lub angular momentum tsis tau khaws cia?
Angular zog yog khaws tseg thaum net sab nraud torque ua rau lub cev lossis lub cev yog xoom. Yog li, cov angular zog yuav yog khaws cia . Qhov sib txawv yog muaj qee qhov tsis xoom sab nraud torque ua piv txwv yog muaj kev sib txhuam ntawm lub log rotating thiab hauv av angular zog yuav tsis yog ua khaws cia.
Pom zoo:
Yuav ua li cas koj thiaj paub yog tias tus nqi sib npaug tsis muaj kev daws teeb meem?
Tus nqi tiag tiag ntawm tus lej yog nws qhov kev ncua deb ntawm xoom. Tus lej ntawd yuav yog qhov zoo, vim koj tsis tuaj yeem ua tsis zoo ob txhais taw deb ntawm ib yam dab tsi. Yog li txhua tus nqi sib npaug sib npaug sib npaug rau tus lej tsis zoo yog tsis muaj kev daws teeb meem, txawm tias tus lej ntawd yog dab tsi
Yuav ua li cas koj thiaj paub tias kev hloov pauv yog ib qho rau ib qho?
Thaum ib tug linear transformation yog piav nyob rau hauv lub sij hawm ntawm ib tug matrix nws yog ib qho yooj yim los txiav txim seb lub linear transformation yog ib-rau-ib los yog tsis los ntawm kev tshuaj xyuas cov linear dependence ntawm txhua kab ntawm lub matrix. Yog hais tias cov kab yog linearly ywj siab, linear transformation yog ib-rau-ib
Yuav ua li cas koj thiaj paub yog tias koj lub tsev nyob rau hauv lub dab dej?
Ntawm no yog 7 lub cim qhia ntau tshaj plaws hauv lub dab dej yuav tshwm sim: Ib puag ncig kev nyuaj siab nyob rau hauv lub ntiaj teb: Localized subsidence los yog kev nyuaj siab nyob txhua qhov chaw ntawm lub tsev: Lub pas dej ncig (los yog lub pas dej loj, tob): Lub hauv paus daws teeb meem: Kev tawg ntawm txoj kev lossis pavement : Cia li poob ntawm qhov dej hauv qhov chaw:
Koj yuav ua li cas thiaj paub tias kev sib raug zoo yog qhov zoo lossis tsis zoo?
Qhov zoo correlation coefficient txhais tau hais tias raws li tus nqi ntawm ib qho kev sib txawv nce, tus nqi ntawm lwm qhov sib txawv nce; raws li ib tug txo qhov qis dua. Qhov tsis zoo correlation coefficient qhia tau hais tias raws li ib qho kev sib txawv nce, qhov txo qis, thiab vice-versa
Yuav ua li cas koj thiaj paub yog tias tus nqi tsis sib xws tsis muaj kev daws teeb meem?
Okay, yog tias qhov tseem ceeb tshaj plaws yeej ib txwm zoo lossis xoom tsis muaj txoj hauv kev uas lawv tuaj yeem tsawg dua lossis sib npaug rau tus lej tsis zoo. Yog li ntawd, tsis muaj kev daws teeb meem rau ob qho no. Hauv qhov no yog tias tus nqi tiag tiag yog qhov zoo lossis xoom ces nws yuav nco ntsoov ntau dua lossis sib npaug rau tus lej tsis zoo