Amplitude vs Frequency
Amplitude thiab zaus yog ob qho ntawm cov khoom tseem ceeb ntawm kev txav mus los. Yuav tsum muaj kev nkag siab zoo hauv cov ntsiab lus no hauv kev kawm txog cov lus tsa suab xws li cov lus tsa suab sib haum xeeb yooj yim thiab cov lus tsa suab sib haum xeeb. Hauv tsab xov xwm no, peb yuav tham txog dab tsi zaus thiab amplitude yog, lawv cov ntsiab lus, kev ntsuas thiab kev vam khom ntawm amplitude thiab zaus, thiab thaum kawg qhov txawv ntawm amplitude thiab zaus.
Frequency
Frequency yog ib lub tswv yim sib tham hauv ntu ntu ntawm cov khoom. Yuav kom nkag siab txog lub tswv yim ntawm zaus, yuav tsum muaj kev nkag siab zoo ntawm cov lus tsa suab. Ib qho lus tsa suab tuaj yeem suav tias yog ib qho kev txav uas rov ua nws tus kheej hauv lub sijhawm teem tseg. Lub ntiaj teb revolving ib ncig ntawm lub hnub yog ib tug periodic motion. Lub satellite orbiting nyob ib ncig ntawm lub ntiaj teb yog ib tug periodic motion txawm lub suab ntawm ib tug tshuav pob teeb yog ib tug periodic motion. Feem ntau ntawm cov lus tsa suab peb ntsib yog ncig, linear lossis semi-circular. Ib qho kev txav mus los muaj ntau zaus. Qhov zaus txhais tau tias "ntau npaum li cas" qhov kev tshwm sim. Rau qhov yooj yim, peb siv zaus raws li qhov tshwm sim ib ob. Cov lus tsa suab ib ntus tuaj yeem ua ib yam lossis tsis sib xws. Cov khaub ncaws hnav tuaj yeem muaj qhov sib txawv ntawm qhov nrawm nrawm. Cov haujlwm xws li amplitude modulation tuaj yeem muaj ob lub sijhawm. Lawv yog cov haujlwm ua ntu zus nyob rau hauv lwm cov haujlwm raws sijhawm. Qhov kev hloov pauv ntawm qhov zaus ntawm lub sijhawm ua haujlwm muab lub sijhawm rau ib lub sijhawm. Tej yam yooj yim harmonic motions thiab damped harmonic motions kuj yog periodic motions. Yog li qhov zaus ntawm kev txav mus los kuj tuaj yeem tau siv lub sijhawm sib txawv ntawm ob qhov xwm txheej zoo sib xws. Qhov zaus ntawm lub pendulum yooj yim tsuas yog nyob ntawm qhov ntev ntawm lub pendulum thiab lub gravitational acceleration rau me me oscillations.
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 tias thaum qhov kev hloov pauv yog xoom lub zog ntawm cov 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, 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.
Qhov txawv ntawm qhov amplitude thiab zaus yog dab tsi?
• Amplitude nruj me ntsis nyob ntawm tag nrho lub zog ntawm lub cev, qhov zaus ntawm kev oscillation nyob ntawm cov khoom ntawm oscillator nws tus kheej.
• Rau ib lub kaw lus, qhov amplitude hloov tau tab sis zaus tsis tuaj yeem.
