Simple Pendulum vs Compound Pendulum
Pendulums yog ib hom khoom uas qhia txog kev ua haujlwm oscillatory ib ntus. Lub pendulum yooj yim yog daim ntawv yooj yim ntawm lub pendulum, uas peb paub ntau dua, whereas lub pendulum compound yog ib daim ntawv txuas ntxiv ntawm cov pendulum yooj yim. Ob qho ntawm cov cuab yeej no tseem ceeb heev hauv kev nkag siab ntawm thaj chaw xws li classical mechanics, nthwv dej thiab vibrations thiab lwm yam kev cuam tshuam hauv physics. Hauv tsab xov xwm no, peb yuav tham txog dab tsi yooj yim pendulum thiab compound pendulum yog, lawv txoj haujlwm, cov qauv lej uas piav qhia txog cov lus tsa suab ntawm cov pendulum yooj yim thiab cov pendulum, cov kev siv ntawm ob, qhov zoo sib xws ntawm cov pendulum yooj yim thiab compound pendulum, thiab Thaum kawg qhov txawv ntawm qhov yooj yim pendulum thiab compound pendulum.
Simple Pendulum
Lub pendulum yooj yim muaj pivot, ib txoj hlua thiab ib pawg. Rau kev yooj yim ntawm kev xam, txoj hlua yog xav tias tsis yog-elastic thiab muaj pes tsawg pawg, thiab huab cua viscosity ntawm qhov loj yog negligible. Cov hlua yog pivoted, thiab qhov loj yog dai los ntawm txoj hlua kom nws tuaj yeem oscillate dawb do. Lub zog nkaus xwb uas ua rau qhov loj yog lub zog gravitational thiab qhov nro ntawm txoj hlua. Cov lus tsa suab ntawm lub pendulum yooj yim rau cov ces kaum me me tau hais tias yog nyob rau hauv daim ntawv ntawm kev sib haum xeeb yooj yim oscillations. Qhov yooj yim harmonic motion yog txhais raws li ib tsab ntawv tsa suab ntawm a=– (ω^2) x qhov twg “a” yog acceleration thiab “x” yog qhov txav los ntawm qhov sib npaug. Lo lus ω yog qhov tsis tu ncua. Ib qho yooj yim harmonic motion yuav tsum muaj ib tug restoration quab yuam. Hauv qhov no, lub zog rov qab los yog lub zog ruaj khov ntawm qhov gravitation. Tag nrho cov tshuab hluav taws xob ntawm qhov system tau txuag. Lub sij hawm ntawm oscillation yog muab los ntawm qhov twg l yog qhov ntev ntawm txoj hlua thiab g yog qhov gravitational acceleration. Yog hais tias muaj viscosity los yog lwm yam damping quab yuam, lub kaw lus raug txheeb xyuas raws li damped oscillation.
Compound Pendulum
Lub pendulum compound, uas tseem hu ua lub cev pendulum, yog qhov txuas ntxiv ntawm lub pendulum yooj yim. Lub pendulum lub cev yog ib lub cev nruj uas yog pivoted kom nws tuaj yeem oscillate dawb do. Lub pendulum compound muaj lub ntsiab lus hu ua qhov chaw ntawm oscillation. Qhov no muab tso rau ntawm qhov deb L ntawm qhov pivot qhov twg L muab los ntawm L=I / mR; ntawm no, m yog qhov loj ntawm lub pendulum, Kuv yog lub sijhawm ntawm inertia hla lub pivot, thiab R yog qhov kev ncua deb mus rau qhov chaw ntawm qhov loj ntawm qhov pivot. Lub sij hawm ntawm oscillation rau lub cev pendulum yog muab los ntawm T=L yog lub npe hu ua qhov ntev ntawm gyration.
Dab tsi yog qhov txawv ntawm Yooj Yim thiab Compound Pendulums?
• Lub sij hawm thiab, yog li ntawd, qhov zaus ntawm lub pendulum yooj yim tsuas yog nyob ntawm qhov ntev ntawm txoj hlua thiab lub gravitational acceleration. Lub sij hawm thiab qhov zaus ntawm lub pendulum yog nyob ntawm qhov ntev ntawm gyration, lub sij hawm ntawm inertia, thiab qhov loj ntawm lub pendulum, nrog rau lub gravitational acceleration.
• Lub pendulum lub cev yog lub neej tiag tiag ntawm lub pendulum yooj yim.
