Fizikisi yeChikoro Chesekondari

Mienzaniso mishanu yekuroverana kweinelastic

1. Bara rine huremu hwemagiramu makumi matatu richifamba nekumhanya kwe30 m/s rinorova danda rine huremu hwe1 kg iro riri padivi. Sarudza kumhanya kwebara kana bara rakaiswa mubhuroko!
Kukurukurirana
Zvinozivikanwa :
Huremu hwebara (m₁) = magiramu mazana mashanu = 0,03 kg
Huremu hwebhuroko (m₂) = 1 kg
Kumhanya kwekutanga kwebara (v)₁) = 30 m/s
Kumhanya kwekutanga kweblock (v)₂) = 0 (bhokisi risingachinji)
Akabvunzwa : kumhanya kwebara neblock mushure mekurovera (v')

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Mienzaniso mitatu yekubonderana kwechikamu che elastic

1. Chinhu che500-gram chinofamba nekumhanya kwe10 m/s uye chinhu che200-gram chichifamba nekumhanya kwe12 m/s. Zvinhu zviviri izvi zvinofamba zvichisangana zvobonderana. Kana mushure mekubonderana, kumhanya kwechinhu che500-gram kuri 6 m/s, saka kumhanya kwechinhu che200-gram kuri…

Kukurukurirana
Zvinozivikanwa :
Huremu hwechinhu 1 (m₁) = magiramu mazana mashanu = 0,5 kg
Huremu hwechinhu 2 (m₂) = magiramu mazana mashanu = 0,2 kg
Kumhanya kwekutanga kwechinhu 1 (v)₁) = -10 m/s
Kumhanya kwekutanga kwechinhu 2 (v)₂) = 12 m/s
Kumhanya kwekupedzisira kwechinhu 1 (v)₁') = 6 m/s

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Mienzaniso 8 yeMibvunzo yeKumhanya Kwemutsara

1. Chinhu chine huremu hwe1 kg chinofamba nekumhanya kwe10 m/s. tichimhanya chinhu chacho…
Kukurukurirana
Zvinozivikanwa :
Huremu (m) = 1 kg
Kumhanya (v) = 10 m/s
Akabvunzwa : linear momentum (p)
Jawab :
Fomura yekukurumidza: p = mv
Tsananguro: p = simba, m = uremu, v = speed.
Simba rechinhu nderinotevera:
p = mv = (1)(10) = 10 kg m/s²

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Mienzaniso gumi nerimwe yeMibvunzo yeMomentum nePulse

1. Bhora rine huremu hwe 0,2 kg rinokandwa rakatwasuka nekumhanya kwe 10 m/s robva rarova madziro, bhora robva radzokera shure nekumhanya kumwe chete. Kuchinja kwesimba rebhora kuri...
Kukurukurirana

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Mienzaniso gumi nematanhatu yemibvunzo pamusoro peMutemo weKuchengetedza Simba reMichina

Mutemo wekuchengetedza simba remakanika mukufamba kwemahara kwemvura

1. Kokonati ine huremu hwe2 kg inodonha zvakasununguka kubva pakukwirira kwemamita matanhatu. Simba rekufamba kwekokonati parinosvika pasi i… g = 10 m/s²
Kukurukurirana
Zvinozivikanwa :
Huremu hwekokonati (m) = 2 kg
Kureba (h) = mamita makumi maviri
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s²
Akabvunzwa : kinetic energy (EK)

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2 Mienzaniso yemibvunzo yesimba

Simba ndiro chiyero chinoitwa basa business kana kuedza kwakaitwa mukati menguva yakati.
Mukuenzanisa, simba ndiro chiyero chekushanda nesimba nenguva.
P=W/t
Tsananguro: P = simba (yuniti Joule/yechipiri), W = basa (Joule) uye t = nguva yechinguva (yechipiri)
Zvichibva pachiyero ichi, zvinogona kugumiswa kuti kana basa richiitwa, simba rinoitwa, uye kana basa richiitwa zvishoma, simba racho rinoitwa zvishoma.
Simba inhamba yakakura. Sisitimu yepasi rose yemayuniti esimba ijoule/yechipiri. Joule/yechipiri = watt (yakapfupikiswa W), yakatumidzwa zita iri mukukudza James Watt.
Sisitimu yeBritish yemayuniti esimba i1 pound-foot-force pasekondi. Iyi yuniti idiki zvakanyanya kuti ishandiswe, saka yuniti hombe, horsepower (yakapfupikiswa hp), inoshandiswa. 1 horsepower = 550 pound-foot-force pasekondi = 764 watts = ¾ kilowatt.

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Mienzaniso mishanu yemibvunzo pamusoro pesimba re elastic potential re springs

1. Chitubu chinorema 2 kg uye chinoturikwa chakamira pachigadziko. Kana chitubu chikareba ne4 cm, zvinoreva kuti shanduko yacho inoonekwa simba rinogona kuwanikwa Simba rinopfava rechitubu ndiro… g = 10 m/s²
Kukurukurirana
Zvinozivikanwa :
Huremu hwemutoro (m) = 2 kg
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s²
Kurema kwemutoro (w) = mg = (2)(10) = 20 Newton
Kuwedzera kwehurefu hwechitubu (x) = 4 cm = 0,04 metres
Akabvunzwa : Simba rinoita kuti chitubu chive chakasimba

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4 Mienzaniso yebasa uye simba rinokwevera pasi

1. Chinhu chine huremu hwe1 kg kudonha kwakasununguka kubva pakukwirira kwemamita gumi kusvika pasi. Sarudza:
(a) Basa rinoitwa nesimba rinokwevera zvinhu pasi pachinhu chacho
(b) Shanduko simba rinogona kuwanikwa giravhiti
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s²
Kukurukurirana
Zvinozivikanwa :
Huremu hwechinhu (m) = 1 kg
Kureba (h) = mamita makumi maviri
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s²
Mhinduro:
(a) Basa rinoitwa nesimba regiravhiti
Kana chinhu chikadonha zvakasununguka, divi rekufamba kwechinhu chacho rinodzika pasi uye divi resimba rinokwevera zvinhu pasi rinoshanda pachinhu chacho (huremu hwechinhu chacho) rinodzikawo pasi. Nekuti vari munzira imwe chete, masimba anokwevera zvinhu anowirirana kana kuti anoumba kona ye0.^o negwara rekufamba kwechinhu chacho. Cos 0 = 1 uye nhamba yega yega yakawedzerwa na1 yakafanana nenhamba iyoyo, saka cos 0 haifanirwe kuiswa mufomura yebasa.
Fomura yebasa ndeiyi W = F s, apo W = basa, F = simba uye s = kutama. Kana ikagadziriswa kuti ienderane nedambudziko iri, fomura yebasa inoshanduka kuita W = wh = mgh, apo W = basa, w = simba rinokwevera pasi, h = shanduko pakukwirira kwechinhu, m = huremu hwechinhu, g = kukurumidza nekuda kwesimba rinokwevera pasi.
Saka basa rinoitwa negiravhiti nderekuti:
W = wh = mgh = (1)(10)(10) = 100 maJoules

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Mienzaniso miviri yekushandisa mitemo yaNewton kune tambo nepulley load system

1. Huremu hwebhuroko 1 i2 kg, huremu hwebhuroko 2 i3 kg, kumhanya kunokonzerwa negiravhiti i10 m/s²Sarudza (a) hukuru uye divi rekumhanya kwehurongwa (b) hukuru hwesimba rekumanikidza patambo!
Kukurukurirana

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Mienzaniso mina yemibvunzo pamusoro pekushandiswa kwemitemo yaNewton pakufamba kwakatwasuka kwechikwidzo kana chiridzi

1. Munhu ane huremu hwe50 kg ari muelevator. Kukurumidza kunokonzerwa negiravhiti = 10 m/s²Sarudza hukuru hwesimba rakajairika rinoitwa nepasi remuchinda pamunhu kana:
(a) elevator isina ruzha
(b) elevator inodzika pasi nespeed isingachinji
(c) elevator inokwira kumusoro nekumhanya kwe5 m/s²
(d) elevator inodzika pasi nekumhanya kwe5 m/s²
(e) elevator yekudonha yakasununguka

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