Amplitude vs Magnitude
Amplitude thiab magnitude yog ob qhov kev ntsuas tseem ceeb hauv mechanics thiab vectors. Yuav tsum muaj kev nkag siab zoo hauv amplitude thiab magnitude, kom nkag siab cov ntsiab lus muaj nyob hauv vectors thiab yoj mechanics tag nrho. Amplitude thiab magnitude tej zaum yuav zoo sib xws, tab sis ob qho no yog cov tswv yim sib txawv heev uas tau siv rau ntau hom kev tshawb fawb. Nyob rau hauv tsab xov xwm no, peb yuav tham txog dab tsi qhov loj thiab amplitude yog, lawv cov ntsiab lus thiab kev siv, qhov zoo sib xws uas tuaj yeem txheeb xyuas tau, thiab thaum kawg qhov txawv ntawm amplitude thiab magnitude.
Amplitude
Amplitude kuj yog ib qho tseem ceeb heev ntawm kev txav mus los. Yuav kom nkag siab txog lub tswv yim ntawm amplitude, cov khoom ntawm kev sib haum xeeb yuav tsum tau to taub. Ib qho yooj yim harmonic motion yog ib qho kev txav xws li kev sib raug zoo ntawm qhov kev hloov pauv thiab qhov nrawm yuav siv daim ntawv ntawm a=-ω2 x qhov "a" yog qhov nrawm thiab "x" yog qhov hloov chaw. Lub acceleration thiab kev hloov chaw yog antiparallel. Qhov no txhais tau hais tias lub net quab yuam ntawm cov khoom kuj yog nyob rau ntawm cov kev taw qhia ntawm acceleration. Qhov kev sib raug zoo no piav qhia txog kev txav mus los qhov twg cov khoom yog oscillating txog lub hauv paus ntsiab lus. Nws tuaj yeem pom tau tias thaum qhov kev hloov pauv yog xoom, lub zog ntawm qhov khoom kuj yog xoom. Qhov no yog qhov sib npaug ntawm qhov oscillation. Qhov siab tshaj plaws txav ntawm cov khoom los ntawm qhov sib npaug ntawm qhov sib npaug yog hu ua amplitude ntawm oscillation. Lub amplitude ntawm ib qho yooj yim harmonic oscillation nruj me ntsis nyob ntawm tag nrho cov neeg kho tshuab zog ntawm lub system. Rau lub caij nplooj ntoos hlav yooj yim - huab hwm coj system, yog tias tag nrho lub zog sab hauv yog E, qhov amplitude yog sib npaug rau 2E / k, qhov twg k yog lub caij nplooj ntoos hlav tas li ntawm lub caij nplooj ntoos hlav. Thaum lub amplitude ntawd, lub instantaneous tshaj tawm yog xoom; yog li ntawd, lub zog kinetic kuj yog xoom. Tag nrho lub zog ntawm lub cev yog nyob rau hauv daim ntawv ntawm lub zog muaj peev xwm. Ntawm qhov sib npaug, lub zog muaj peev xwm dhau los ua xoom.
Magnitude
Magnitude yog siv rau qhov loj ntawm qhov sib tham. Lo lus no tseem ceeb heev hauv kev txheeb xyuas vector. Ntau yam xws li kev ceev, kev ncua deb thiab lub zog tsuas yog qhia nyob rau hauv tus nqi. Yog li ntawd, cov khoom no yog hu ua scalars. Ntau yam xws li kev khiav tawm thiab kev tshaj tawm yog qhia nyob rau hauv ob qho tib si tus nqi thiab cov kev taw qhia. Cov khoom no yog hu ua vectors. Magnitude yog ib lo lus uas siv tau rau ob qho tib si vectors thiab scalars. Qhov loj ntawm vector yog qhov loj ntawm vector, uas kuj yog sib npaug rau qhov ntev ntawm tus sawv cev vector. Qhov loj ntawm scalar yog qhov scalar nws tus kheej. Qhov loj yog ib txwm scalar kom muaj nuj nqis. Ib vector yog tsim los ntawm kev sib xyaw ntawm qhov loj thiab qhov kev taw qhia ntawm qhov ntau. Magnitude tuaj yeem yog qhov tsis zoo lossis tus nqi zoo. Ib vector uas muaj pes tsawg qhov loj yog lub npe hu ua null vector.
Qhov txawv ntawm qhov loj thiab qhov loj me yog dab tsi?
• Magnitude tuaj yeem muaj ntau qhov sib txawv xws li qhov ntev, qhov ntev ntawm ib chav tsev lub sijhawm, thiab lub zog, tab sis rau lub cev lub cev, amplitude tsuas muaj qhov ntev, qhov hluav taws xob, lossis tam sim no raws li qhov loj me.
• Amplitude yog ib yam khoom, uas yog tshwj xeeb rau oscillations, tab sis qhov magnitude yog ib yam khoom uas muaj nyob rau hauv txhua lub cev muaj nuj nqis.
