Kuchuluka kwa thupi Mayunitsi Miyeso - Mavuto ndi Mayankho

Kuchuluka kwa thupi, mayunitsi, miyeso - mavuto ndi mayankho 1

Kutengera tebulo lomwe lili pamwambapa, ndi kuchuluka kotani komwe kuli ndi mayunitsi ndi miyeso yeniyeni.

Yankho:

1) Mphamvu

Equation ya momentum ndi p = mv

p = mphamvu, m = kulemera , v = liwiro

Muyeso wa kulemera = M ndi muyeso wa liwiro = L/T = LT ^-1 kotero kuti muyeso wa mphamvu = MLT ^-1

Chigawo chapadziko lonse cha mphamvu = kg m/s = kg ms ^-1

2) Mphamvu

Equation ya mphamvu ndi F = ma

F = mphamvu, m = kulemera , a = kufulumizitsa

Mulingo wa kulemera = M ndi muyeso wa kufulumizitsa = L/T ² = LT ^-2 kotero muyeso wa mphamvu ndi MLT ^-2

Chigawo cha mphamvu yapadziko lonse lapansi ndi kg m/s ² = kg ms ^-2

3) Mphamvu

Equation ya mphamvu ndi W = F d

W = ntchito, F = mphamvu, d = kusamuka

Muyeso wa mphamvu = MLT ^-2 ndipo muyeso wa kusamuka ndi L kotero kuti muyeso wa ntchito ndi [M][L][T] ^-2 [L] = [M][L] ² [T] ^-2

Equation ya mphamvu ndi P = W/t

P = mphamvu, W = ntchito, t = nthawi

Muyeso wa ntchito = [M][L] ² [T] ^-2 ndipo muyeso wa nthawi = [T] kotero kuti muyeso wa mphamvu = [M][L] ² [T] ^-2 / [T] = [M][L] ² [T] ^-2 [T] ^-1 = [M][L] ² [T] ^-3

Chigawo cha mphamvu yapadziko lonse lapansi ndi kg m ² /s ³ = kg m ² s ^-3

2. Kutengera tebulo ili m'munsimu, kuchuluka kwa zinthu zomwe zili ndi mayunitsi ndi miyeso yolondola ndi….

Kuchuluka kwa thupi, mayunitsi, miyeso - mavuto ndi mayankho 1

Yankho:

Equation ya momentum ndi p = mv.

Chigawo cha kulemera (m) ndi kilogalamu (kg) ndipo chigawo cha liwiro (v) ndi mita pa sekondi (m/s) kotero kuti chigawo cha mphamvu ndi kg m/s kapena kg m/s . Kilogalamu ndi muyeso wa kulemera ndi muyeso wa [M], mita ndi muyeso wa kutalika ndi muyeso wa [L], chachiwiri ndi muyeso wa nthawi ndi muyeso wa [T] kotero kuti muyeso wa mphamvu ndi [M][L]/[T] kapena [M][L][T] ^-1.

Equation ya mphamvu ndi F = ma.

Chigawo cha Misa (m) ndi kilogalamu (kg) ndipo gawo la kufulumizitsa (a) ndi mamita pa sekondi imodzi (m/s ² ) kotero gawo la mphamvu ndi kg m/s ² kapena kg ms ^-2 . Chigawo cha kulemera ndi kilogalamu yokhala ndi muyeso wa [M], gawo la kutalika ndi mita yokhala ndi muyeso wa [L], gawo la nthawi ndi lachiwiri yokhala ndi muyeso wa [T] kotero kuti muyeso wa mphamvu ndi [M][L]/[T] ² kapena [M][L][T] ^-2

Equation ya mphamvu ndi P = W/t , equation ya ntchito ndi W = F s, equation ya mphamvu ndi F = m a.

Chigawo cha kulemera ndi kilogalamu (kg), gawo la kufulumizitsa ndi mamita pa sekondi imodzi (m/s ² ) kotero kuti gawo la mphamvu ndi kg m/s ^2. Chigawo cha kusuntha ndi mita (m), gawo la mphamvu ndi kg m/s ² kotero kuti gawo la ntchito ndi kg m/s ² xm = kg m ² /s ² . Chigawo cha nthawi ndi chachiwiri (s), gawo la ntchito ndi kg m ² /s ² kotero kuti gawo la mphamvu ndi kg m ² /s ² : s = kg m ² /s ³ kapena kg m ² s ^-3.

Chigawo cha kulemera ndi kilogalamu yokhala ndi muyeso wa [M], gawo la kutalika ndi mita yokhala ndi muyeso wa [L], gawo la nthawi ndi lachiwiri ndi muyeso wa [T] kotero kuti muyeso wa mphamvu ndi [M][L] ² /[T] ³ kapena [M][L] ² [T] ^-3.

3. Mphamvu imatsimikiziridwa ngati liwiro lomwe ntchito imachitikira. Kapena mphamvu ndi chiŵerengero cha ntchito ndi nthawi yomwe yadutsa. Dziwani kukula kwa mphamvu.

Yankho:

Kuyerekeza kwa mphamvu:

W = ntchito, F = mphamvu, a = kufulumizitsa, v = liwiro, d = mtunda, t = nthawi yopuma

m = kulemera ( kukula kwa kulemera = M), d = mtunda ( kukula kwa mtunda = L), t = nthawi ( kukula kwa nthawi = T).

Kukula kwa mphamvu:

Kuchuluka kwa thupi, mayunitsi, miyeso - mavuto ndi mayankho 4

Kodi kuchuluka kwa thupi ndi chiyani?
- Yankho: Kuchuluka kwenikweni ndi khalidwe la chinthu kapena dongosolo lomwe lingathe kuwerengedwa ndikuyesedwa. Zitsanzo zikuphatikizapo kulemera, kutalika, nthawi, kutentha, ndi mphamvu.
N’chifukwa chiyani mayunitsi ndi ofunikira poyesa kuchuluka kwa zinthu zakuthupi?
- Yankho: Mayunitsi amapereka njira yodziwika bwino yofotokozera kukula kwa kuchuluka kwenikweni. Amaonetsetsa kuti miyeso yake ndi yomveka bwino, yolondola, komanso yogwirizana, zomwe zimathandiza kuti asayansi ndi mainjiniya padziko lonse lapansi azitha kulankhulana bwino komanso kumvetsetsana bwino.
Kodi kusiyana pakati pa kuchuluka koyambira (kapena koyambira) ndi kuchuluka kochokera ndi kotani?
- Yankho: Kuchuluka koyambira ndi kuchuluka koyambira komwe kumatsimikiziridwa payekhapayekha ndipo kumapanga maziko a miyeso ina. Zitsanzo zikuphatikizapo kutalika, kulemera, ndi nthawi. Kuchuluka komwe kumachokera kumapangidwa kuchokera ku kuphatikiza kwa kuchuluka koyambira kumeneku, monga dera (kutalika x m'lifupi) kapena liwiro (mtunda/nthawi).
Kodi miyeso ndi chiyani? Kodi ikugwirizana bwanji ndi kuchuluka kwa zinthu zakuthupi?
- Yankho: Miyeso imatanthauza mtundu ndi mtundu wa kuchuluka kwa zinthu zakuthupi (monga, [L] kutalika, [M] kulemera, [T] nthawi). Zimayimira mphamvu zomwe kuchuluka kwa zinthu zofunika kumakwezedwa kuti kuimire kuchuluka kwa zinthu zakuthupi.
Kodi tanthauzo la "njira yoyezera" ya kuchuluka kwa thupi ndi chiyani?
- Yankho: Fomula yoyezera kukula imasonyeza ubale wa kuchuluka kwa chinthu malinga ndi miyeso yake yoyambira. Mwachitsanzo, fomula yoyezera kukula kwa liwiro ndi $[L T^{-1}]$ , kusonyeza kuti liwiro limachokera ku kutalika ([L]) kogawidwa ndi nthawi ([T]).
Kodi dongosolo la SI (International System of Units) ndi lofunika bwanji mu sayansi ndi uinjiniya wamakono?
- Yankho: Dongosolo la SI limapereka mayunitsi ovomerezeka padziko lonse lapansi poyesa kuchuluka kwa zinthu zakuthupi. Izi zimatsimikizira kufanana, zimachepetsa chisokonezo, komanso zimathandiza mgwirizano pakati pa asayansi ndi mainjiniya padziko lonse lapansi.
Kodi kusiyana pakati pa scalar ndi vekitala ndi kotani?
- Yankho: Kuchuluka kwa scalar kumakhala ndi kukula kokha (monga kulemera, kutentha), pomwe kuchuluka kwa vekitala kumakhala ndi kukula ndi malangizo (monga liwiro, mphamvu).
N’chifukwa chiyani sitingagwiritse ntchito mayunitsi osasinthika poyesa kuchuluka kwa zinthu zakuthupi?
- Yankho: Kugwiritsa ntchito mayunitsi osasinthika kungayambitse chisokonezo, kusasinthasintha, komanso kusalumikizana bwino mu miyeso ndi mawerengedwe asayansi. Mayunitsi okhazikika amaonetsetsa kuti miyeso imamveka bwino komanso yofanana.
Kodi kusanthula kwa magawo kungakhale kothandiza bwanji mu fizikisi?
- Yankho: Kusanthula kwa miyeso kumathandiza kutsimikizira kulondola kwa ma equation akuthupi poyang'ana kusinthasintha kwa miyeso mbali zonse ziwiri za equation. Kungagwiritsidwenso ntchito kupeza ubale pakati pa kuchuluka kosiyanasiyana kwathupi.
N’chifukwa chiyani kuchuluka kwina, monga refractive index kapena coefficient of friction, kumaonedwa kuti sikuli ndi gawo?

Yankho: Kuchuluka kopanda miyeso ndi ma ratio ofanana, motero miyeso yawo imachotsedwa. Mwachitsanzo, refractive index ndi chiŵerengero cha liwiro la kuwala mu vacuum ndi liwiro lake mu sing'anga. Popeza zonsezi ndi liwiro, miyeso yawo imachotsedwa, zomwe zimapangitsa refractive index kukhala yopanda miyeso.