Simba - matambudziko nemhinduro

Simba ndiro chiyero chinoitwa basa munguva yakatarwa. Pamasvomhu, simba ndiro chiyero chebasa/nguva.

P = W/t

Tsananguro: P = simba (Joule/yechipiri = Watt), W = basa (Joule), t = nguva yechinguva (yechipiri)

Zvichibva pachiyero ichi, zvinogona kugumiswa kuti kana mwero webasa wakawanda, simba rawo rinokura. Kune rumwe rutivi, mwero webasa udiki, simba rawo rinoderera. Mwero webasa unoreva mwero unoitirwa basa.

Simba i scalar. Chikamu cheSI chesimba ndiJoule/chechipiri. Joule/chechipiri = Watt (yakapfupikiswa saW), yakatumidzwa zita iri kuratidza rukudzo kuna James Watt. Chikamu cheumambo hweBritain chesimba i foot-pounds pasekondi.

Chishandiso ichi chidiki zvakanyanya kuti chishandiswe, saka chinoshandiswa simba guru remabhiza (rakapfupikiswa sehp). Simba rimwe chete remabhiza = 550 foot-pounds pasekondi = 764 Watts = ¾ kilowatt.

Huwandu hwebasa hunogonawo kuratidzwa mumagetsi x nguva, semuenzaniso, kilowatt-hours kana kWh. KWh imwe chete inoreva basa rinoitwa nechiyero chisingachinji che1 kiloWatt kweawa imwe chete.

1. Munhu anorema 50 kg anomhanya achikwira masitepisi akareba mamita gumi mumaminitsi maviri. Kumhanya kunokonzerwa negiravhiti (g) i10 m/ s ^2. Sarudza simba.

Zvinozivikanwa:

Huremu (m) = 50 kg

Kureba (h) = mamita gumi

Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s ²

Nguva (t) = maminetsi maviri = 2 (60) = 120 masekondi s

Kudiwa : Simba (P)

Solution:

Fomura yesimba:

P=W/t

P = simba , W = basa , t = nguva

Fomura Yebasa:

W = F s = wh = mgh

W = basa , F = simba , w = huremu , d = kusuduruka , h = kureba , m = huremu, g = kukurumidza kunokonzerwa negiravhiti

W = mgh = (50)(10)(10) = 5000 Joules.

P = W / t = 5000 / 120 = 41.7 Joules/se c on d.

2. Verenga simba rinodiwa nemunhu anorema 60 kg anokwira muti wakareba mamita mashanu mumasekonzi gumi. Kukurumidza kunokonzerwa negiravhiti i10 m/s ².

Zvinozivikanwa:

Huremu (m) = 60 kg

Kureba (h) = mamita mashanu s

Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s ²

Nguva yepakati (t) = masekondi gumi

Kudiwa : Simba

Solution:

Basa:

W = mgh = (60)(10)(5) = 3000 maJoules

Simba:

P = W / t = 3000 / 10 = 300 Joules/se cond.

3. Mutambo wekusetsa unotenderera une simba rema watts mazana matatu nenguva yemaminitsi mashanu uchitenderera marounds mashanu. Simba raunoshandisa i….

A. 15 kJ

B. 75 kJ

C. 90 kJ

D. 450 kJ

Zvinozivikanwa:

Simba (P) = 300 Watts = 300 Joules/sekondi

Nguva (T) = maminetsi mashanu = 5 (masekondi makumi matanhatu) = masekondi mazana matatu

Nhamba yekutenderera = 5

Zvinodiwa: Simba rinoshandiswa nemutambo wemitambo inotenderera

Solution:

Mhinduro chaiyo ndiD.

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