Linear Motion vs Non Linear motion
Linear motion thiab nonlinear tsab ntawv tsa suab yog ob txoj hauv kev los txheeb xyuas cov lus tsa suab hauv qhov xwm txheej. Kab lus no hais txog qhov zoo sib xws, cov xwm txheej txaus, qhov yuav tsum tau ua thiab thaum kawg qhov sib txawv ntawm cov lus tsa suab thiab cov lus tsis sib xws.
Linear Motion
Linear tsab ntawv tsa suab yog cov lus tsa suab ntawm txoj kab ncaj nraim. Qhov no tseem hu ua rectilinear motion. Kev txav ntawm ib qho khoom muaj ntau yam khoom. Qhov nrawm ntawm ib yam khoom yog tus nqi ntawm kev hloov pauv hloov vector, lossis tsuas yog muab tso rau, qhov kev ncua deb mus rau hauv chav tsev lub sijhawm. Velocity yog vector, uas txhais tau hais tias nws muaj qhov loj thiab muaj kev taw qhia. Qhov loj ntawm qhov nrawm ib leeg yog hu ua qhov nrawm ntawm qhov khoom. Lub acceleration ntawm ib yam khoom yog tus nqi ntawm kev hloov ntawm tshaj tawm ntawm cov khoom. Acceleration kuj yog vector. Qhov linear momentum ntawm ib yam khoom yog qhov khoom ntawm qhov nrawm ntawm qhov khoom thiab qhov loj ntawm qhov khoom. Vim huab hwm coj yog ib qho scalar ntau thiab tshaj tawm yog vector kom muaj nuj nqis, momentum kuj yog vector. Newton thawj txoj cai lij choj yog ib txoj cai tseem ceeb rau kev tawm suab. Nws hais tias qhov nrawm ntawm lub cev tseem nyob tas li tshwj tsis yog lub cev tau ua los ntawm lub zog sab nraud. Txij li kev tshaj tawm yog vector, kev taw qhia ntawm kev txav tsis hloov. Yog tias qhov pib txav ntawm cov khoom yog linear, cov khoom yuav txuas ntxiv mus rau ntawm txoj kev linear, yog tias tsis muaj kev quab yuam sab nraud. Txawm hais tias ib qho kev quab yuam sab nraud raug siv, yog tias nws nyob rau hauv cov kev taw qhia ntawm kev txav, cov khoom tseem yuav txav mus rau hauv txoj kab ncaj nraim. Yog hais tias lub net quab yuam ntawm cov khoom yog nyob rau hauv cov kev taw qhia ntawm lub zog, lub objet yuav mus txuas ntxiv mus rau ib tug linear txoj kev tab sis nrog acceleration.
Nonlinear Motion
Txhua qhov kev taw qhia uas tsis yog linear tuaj yeem raug cais raws li cov lus tsa suab. Ib qho kev taw qhia uas tsis yog-linear yuav tsum muaj ob yam xwm txheej. Thawj qhov xwm txheej yog tias yuav tsum muaj lub zog ua haujlwm ntawm qhov khoom. Qhov xwm txheej thib ob yog tias lub zog nqaim ua raws li qhov khoom yuav tsum tau siv rau hauv ib qho kev taw qhia tsis sib npaug rau qhov kev txav. Ib ntu me me ntawm cov lus tsa suab tsis yog linear tuaj yeem suav tias yog linear. Feem ntau ntawm cov lus tsa suab uas tau ntsib hauv lub neej niaj hnub yog nonlinear. Nyob rau hauv ib qho kev taw qhia uas tsis yog-linear, ib txwm muaj kev hloov pauv hauv kev coj ua. Txawm hais tias qhov ceev ntawm cov khoom yog qhov tsis tu ncua, kev hloov pauv hauv cov kev taw qhia ua rau muaj kev hloov pauv hauv vector vector. Qhov no txhais tau hais tias cov khoom yog tas li accelerating. Ib yam khoom txav mus rau ntawm txoj kev uas tsis yog linear yog ib txwm nyob rau hauv acceleration. Newton txoj cai thib ob hais tias qhov nrawm ntawm lub cev yog sib npaug, ncaj qha proportional rau net force, thiab inversely proportional to the mass.
Dab tsi yog qhov sib txawv ntawm linear motion thiab nonlinear motion?
• Linear motion tsis xav tau lub zog net tab sis nonlinear tsab ntawv tsa suab yuav tsum muaj net force.
• Ib qho kev quab yuam ua tib yam rau qhov kev txav mus los yuav ua rau muaj kev tawm suab; net quab yuam siv nyob rau hauv ib qho kev taw qhia tsis sib npaug mus rau qhov txav yuav ua rau tsis muaj kab lus.
