Yuav Ua Li Cas Nkag Siab Txog Mechanical Classical: 12 Kauj Ruam (nrog Duab)

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Yuav Ua Li Cas Nkag Siab Txog Mechanical Classical: 12 Kauj Ruam (nrog Duab)
Yuav Ua Li Cas Nkag Siab Txog Mechanical Classical: 12 Kauj Ruam (nrog Duab)

Video: Yuav Ua Li Cas Nkag Siab Txog Mechanical Classical: 12 Kauj Ruam (nrog Duab)

Video: Yuav Ua Li Cas Nkag Siab Txog Mechanical Classical: 12 Kauj Ruam (nrog Duab)
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Classical physics yog kawm txog kev txav chaw, cov phiajcim, cov menyuam, thiab cov ntiajteb. Nws feem ntau cuam tshuam nrog kev txav ntawm cov khoom loj los ntawm qhov chaw ntawm qhov qeeb qeeb qeeb. Classical physics cuam tshuam nrog kev siv tshuab ntawm cov khoom txav hauv kev teb rau lub zog. Vim li no, kev siv lub cev yooj yim feem ntau raug xa mus rau qhov yooj yim li cov neeg kho tshuab lossis kinematics.

Cov kauj ruam

Ntu 1 ntawm 3: Kawm Newton Txoj Cai Lij Choj ntawm Kev Tshaj Tawm thiab Kev Txuag

To taub Classics Physics Kauj Ruam 1
To taub Classics Physics Kauj Ruam 1

Kauj Ruam 1. Txhais Newton thawj txoj cai ntawm kev txav chaw

Newton thawj txoj cai lij choj qhia peb tias txhua yam khoom hauv kev txav mus los yuav txav mus rau qhov qub ib yam nkaus yog tias tsis muaj lwm lub zog ua rau nws hloov nws cov lus tsa suab. Yog tias ib yam khoom nyob ruaj khov, nws yuav nyob ruaj khov.

  • Thawj txoj cai lij choj no qee zaum hu ua txoj cai ntawm inertia.
  • Txoj cai lij choj no hais tias cov khoom txav nrog qhov nrawm (qhov nrawm thiab kev taw qhia) tshwj tsis yog muaj qhov tsis muaj xoom (tsis sib luag) lub zog ua rau nws. Ib yam khoom uas tsis txav mus muaj lub zog nqa ntawm xoom ua rau nws.
To taub Classics Physics Kauj Ruam 2
To taub Classics Physics Kauj Ruam 2

Kauj Ruam 2. Nkag Siab Newton txoj cai thib ob ntawm kev txav chaw

Raws li qhov quab yuam ua rau ntawm ib qho khoom nce, qhov nrawm ntawm qhov khoom nce. Kev quab yuam ib leeg tsis txiav txim siab qhov nrawm ntawm cov khoom; qhov khoom hnyav tseem ua lub luag haujlwm tseem ceeb. Qhov loj dua ntawm qhov khoom, qhov qeeb nws yuav nrawm dua.

  • Qhov kev sib raug zoo no tuaj yeem piav qhia siv tus lej F = ma qhov twg "F" yog lub zog ua haujlwm ntawm lub hom phiaj, "m" yog qhov hnyav ntawm qhov khoom, thiab "a" yog qhov nrawm ntawm cov khoom.
  • Lwm txoj hauv kev xav txog txoj cai no yog qhov khoom yuav tsis nrawm dua tshwj tsis yog muaj qhov tsis sib luag (lossis net) quab yuam ua rau nws.
To taub Classics Physics Kauj Ruam 3
To taub Classics Physics Kauj Ruam 3

Kauj Ruam 3. Kawm Newton txoj cai thib peb ntawm kev txav chaw

Txoj cai thib peb hais tias txhua qhov kev nqis tes ua muaj qhov sib npaug thiab tsis sib thooj. Thaum lub zog ua rau ntawm ib qho khoom, muaj lub zog ntawm qhov loj ib yam nkaus uas thawb rov qab rau hauv qhov kev coj rov qab mus rau qhov qub zog.

  • Piv txwv li, thaum koj zaum ntawm lub rooj ntev zaum, koj tab tom ua lub zog qis ntawm lub rooj zaum, tab sis lub rooj ntev zaum tab tom ua kom muaj zog sib npaug nce rau koj.
  • Txoj cai no hais tias txhua lub zog tuaj ua khub.
To taub Classics Physics Kauj Ruam 4
To taub Classics Physics Kauj Ruam 4

Kauj Ruam 4. Paub cov cai lij choj ntawm kev txuag hluav taws xob, lub zog, thiab lub zog nrawm

Kev txuag lub zog hais tias "lub zog tsis tuaj yeem tsim lossis tsis puas." Hauv lwm lo lus, lub zog tseem nyob ruaj khov hauv ib qho kev cais tawm. Tib yam mus rau lub zog thiab lub zog nrawm: nyob rau hauv ib qho kev sib cais ntawm lub zog thiab lub zog tseem ceeb tseem nyob ruaj khov.

Nws yog ib qho tseem ceeb kom nco ntsoov tias cov kab ke sib cais yog ib qho uas tsis muaj cov sab nrauv ua rau nws. Hauv qhov tseeb, ib qho kev sib cais tsis muaj tiag tiag, tab sis nws yog tus qauv muaj txiaj ntsig los piav qhia cov hauv paus ntsiab lus ntawm kev cai lij choj ntawm lub cev

Ntu 2 ntawm 3: Nkag Siab Qhov Tseeb ntawm Lub Hom Phiaj

To taub Classics Physics Kauj Ruam 5
To taub Classics Physics Kauj Ruam 5

Kauj Ruam 1. Kawm paub qhov sib piv yooj yim

Muaj plaub qhov sib npaug yooj yim uas piav qhia txog kev txav ntawm ib qho khoom raws li lub sijhawm (t), tshaj tawm (vf: Kev tshaj tawm zaum kawg; vkuv: pib tshaj tawm), nrawm (a), thiab tshem tawm (d). Cov no yog hu ua kinematic equations thiab tuaj yeem rov kho dua hauv ntau txoj hauv kev los daws qhov xav tau sib txawv. Kev muaj peev xwm los muab cov zauv no ntawm koj tus kheej yuav ua rau koj nkag siab txog cov ntsiab lus no.

  • Rov tsim dua qee qhov kev sim ua haujlwm yooj yim hauv tsev thiab sim muab qhov sib npaug los ntawm cov ntaub ntawv koj tau sau.
  • Qhov yooj yim kinematics equations yog:

    • d = vvkuvt + ½ aw2
    • vf2 = vkuv2 + 2 hli
    • vf = vkuv + ntawm
    • d = (vkuv + vf)/2 * t
To taub Classics Physics Kauj Ruam 6
To taub Classics Physics Kauj Ruam 6

Kauj Ruam 2. Txheeb xyuas lub vector

Vector yog qhov ntau uas siv ntau hauv lej thiab physics uas muaj qhov loj thiab qhov taw qhia. Qhov loj qhia qhov "ntev" ntawm cov lus tsa suab. Thaum tham txog qhov nrawm, qhov ntau yog qhov nrawm ntawm qhov khoom txav mus. Cov kev taw qhia cov khoom txav txhais cov tivthaiv thib ob ntawm vector, kev taw qhia.

Thaum cov khoom txav mus los lawv feem ntau txav mus rau ib qho kev taw qhia ntawm tus nqi tshwj xeeb. Tej zaum lawv yuav txav ntawm qhov nrawm lossis nrawm dua, tab sis nyob rau hauv ob qho tib si, cov lus tsa suab tau hais kom muaj ob qhov loj thiab kev coj; yog li ntawd, nws cov lus tsa suab yog vector

To taub Classics Physics Kauj Ruam 7
To taub Classics Physics Kauj Ruam 7

Kauj Ruam 3. Kos daim duab ntawm qhov teeb meem

Physics tuaj yeem tsis paub daws teeb, tab sis txoj hauv kev zoo tshaj los nkag rau hauv paus ntawm qhov teeb meem yog kos nws tawm. Kos ib daim duab yooj yim ntawm dab tsi tshwm sim hauv qhov teeb meem tau piav qhia thiab tom qab ntawd ntxiv rau txhua qhov ntawm cov rog uas muaj.

  • Cov tub rog yog cov vectors yog li nco ntsoov kos lawv siv tus xub nrog ob qho tib si loj thiab qhia.
  • Tsis txhob hnov qab txog qhov tsis pom lub zog xws li lub zog ntawm lub ntiajteb txawj nqus, lub zog sib txhuam, thiab lub zog ib txwm muaj (lub zog uas ua tawm tsam ib yam khoom uas nyob ntawm nws).
To taub Classics Physics Kauj Ruam 8
To taub Classics Physics Kauj Ruam 8

Kauj Ruam 4. Xyaum nrog qee qhov piv txwv

Txoj hauv kev zoo tshaj plaws los kawm qee yam yog dhia dej kom raug. Sim koj txhais tes ntawm qee qhov teeb meem yooj yim txhawm rau txheeb xyuas koj txoj kev nkag siab. Txhawm rau daws teeb meem kos daim duab, sau cov ntawv, txiav txim siab qhov koj tab tom daws rau thiab siv qhov sib npaug raug los daws qhov koj tsis paub.

  • Piv txwv li: Nrhiav qhov nrug nws yuav siv lub tsheb mus los ntawm 25 m/s kom tsis txhob siv nrawm -9 m/s2.
  • Sketch ib daim duab ntawm lub tsheb, kos cov xub los sawv cev rau txoj kev taug kev.
  • Sau cov neeg paub: vf = 0 m/s, vkuv = 25 m/s, a = -9 m/s2, d = yog?
  • Txheeb xyuas qhov sib npaug uas cuam tshuam: vf2 = vkuv2 + 2 hli
  • Plug hauv qhov paub: 02 = 252 + 2 (-9) (d)
  • Dov rau d: d = (02 - 252)/-18 = 34.72 m
  • Lub tsheb tau taug kev 34.72 metres ua ntej nres.

Ntu 3 ntawm 3: nthuav koj txoj Kev Paub

To taub Classics Physics Kauj Ruam 9
To taub Classics Physics Kauj Ruam 9

Kauj Ruam 1. Nyeem tus pib phau ntawv qhia txog lub cev

Yog tias koj xav tau tiag tiag rau kev dhia dej mus rau lub cev qub, yuav tus pib phau ntawv thiab pib nyeem. Tsuas yog nyeem cov ntsiab lus yuav tsis txaus kom nkag siab tiag. Koj tseem yuav tsum tshuaj xyuas cov teeb meem piv txwv thiab sim koj txhais tes ntawm qee cov lus nug ntawm qhov kawg ntawm txhua tshooj.

Siv sijhawm los ua cov txheej txheem ntawm cov kab zauv yooj yim ntawm cov lus tsa suab thiab nkag siab tiag vim li cas lawv thiaj ua haujlwm ua ntej koj txav mus rau lub tswv yim tom ntej

To taub Classics Physics Kauj Ruam 10
To taub Classics Physics Kauj Ruam 10

Kauj Ruam 2. Kawm hoob physics online

Nyeem phau ntawv ntawm koj tus kheej yuav tsis txaus rau koj kom tau txais qhov kev paub tob uas koj xav tau hauv physics. Muaj ntau qhov qhib chav kawm thiab chav kawm online uas koj tuaj yeem kawm cuam tshuam nrog physics. Ntau ntawm cov chav kawm no muaj cov haujlwm los tshuaj xyuas koj kev nkag siab thiab cov rooj sab laj los tham txog kev ua haujlwm.

Cov hom kev kawm no tseem yooj yim kom haum rau koj lub sijhawm vim koj tuaj yeem ua haujlwm ntawm cov khoom thaum koj muaj sijhawm

To taub Classics Physics Kauj Ruam 11
To taub Classics Physics Kauj Ruam 11

Kauj Ruam 3. Kuaj thiab ua cov teeb meem los tshuaj xyuas koj qhov kev nkag siab

Physics yog ib qho kev kawm tau zoo tshaj plaws los ntawm kev ua haujlwm ntawm tes thiab daws teeb meem kev xyaum. Ua qee qhov kev sim yooj yim thiab pom tias koj tuaj yeem muab qhov sib npaug raws li koj cov ntaub ntawv. Teb tag nrho cov lus nug tom kawg ntawm txhua tshooj thiab tshawb xyuas koj cov kev daws teeb meem.

  • Tshawb nrhiav ntau qhov teeb meem teeb tsa online rau cov tswv yim uas muaj teeb meem ntau dua li lwm tus.
  • Physics tsim los ntawm nws tus kheej, yog li txuas ntxiv ua cov teeb meem txog thaum koj xav tias koj tau ua tiav lub tswv yim ua ntej txav mus rau tom ntej.
To taub Classics Physics Kauj Ruam 12
To taub Classics Physics Kauj Ruam 12

Kauj Ruam 4. Sau npe rau chav kawm physics yooj yim hauv tsev kawm qib siab hauv ib cheeb tsam

Yog tias koj ua haujlwm tau zoo tshaj plaws hauv chav kawm, txheeb xyuas cov chav kawm muaj nyob hauv koj lub zej zog tsev kawm qib siab hauv zej zog. Xaiv chav kawm nrog tus xibfwb qhia ntawv zoo nyob rau lub sijhawm uas haum rau koj lub sijhawm. Ua ib chav kawm tsuas yog vim tias koj xav paub txog cov ntaub ntawv tuaj yeem lom zem heev thiab koj yuav muaj feem yuav tsom mus rau txoj haujlwm thiab kawm tiag tiag.

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