Mavuto Othetsedwa mu Fiziki Yoyambira

Mafunso atatu okhudza Gravity equation

1. Tinthu titatu tating'onoting'ono tolemera makilogalamu 1 tili pamalo otsetsereka a makona atatu ofanana omwe mbali zake ndi zazitali mamita 1. Kodi mphamvu yokoka yomwe tinthu tating'onoting'ono timapezeka mu G ndi yaikulu bwanji?

Anakonza

Kukula kwa mphamvu yokoka yomwe imawonedwa ndi chimodzi mwa tinthu tating'onoting'ono.

F₁₂ = G (m₁)m₂) /r² = G (1)(1) / 1² = G/1 = G

F₁₃ = G (m₁)m₃) /r² = G (1)(1) / 1² = G/1 = G

Mphamvu yokoka yomwe imabwera pambuyo pake pa mfundo 1:

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Mafunso atatu okhudza ma equation amagetsi

1. Mpira woyendetsa womwe uli ndi utali wa 10 cm uli ndi mphamvu yamagetsi ya 500 μC. Mapointi A, B, ndi C ali pamzere ndi pakati pa mpirawo pa mtunda wa 12 cm, 10 cm ndi 8 cm motsatana kuchokera pakati pa mpirawo. Werengani mphamvu yamagetsi pa mapointi A, B, ndi C!

Amadziwika:

Utali wa mpira woyendetsa (R) = 10 cm = 0.1 m

Mphamvu yamagetsi (q) = 500 μC = 500 x 10^-6 C

r_A = 12 cm = 0,12 m

r_B = 10 cm = 0,1 m

r_C = 8 cm = 0,08 m

Coulomb yosasintha (k) = 9 x 10⁹

SE basi: Mphamvu yamagetsi pa mfundo A (E)_A), pa mfundo B (E_B) ndipo pa mfundo C (E_C)

yankho;

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Mafunso atatu okhudza equation yokhazikika ya Spring

1. Kasupe wopangidwa ndi free suspension ali ndi kutalika kwa 10 cm. Kumapeto kwake, kulemera kwa magalamu 200 kumapachikidwa kotero kuti kutalika kwa kasupe kuli 11 cm. Ngati g = 10 m/s², kodi mphamvu ya masika yokhazikika ndi chiyani?

Zodziwika:

Kutalika koyambirira kwa kasupe (y₁) = 10 cm = 0.10 m

Kutalika komaliza kwa kasupe (y₂) = 11 cm = 0.11 m

Kusintha kwa kutalika kwa masika (Δy) = 0.11 – 0.10 = 0.01 mamita

Kulemera kwa katundu (m) = 200 magalamu = 0.2 kg

Kulemera kwa katundu (w) = mg = (0,2)(10) = 2 Newtons

SE basi: Chokhazikika cha masika (k)

yankho;

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Mafunso atatu okhudza Potential difference equation

1. Mphamvu yamagetsi imasunthidwa mu gawo lamagetsi lofanana ndi mphamvu ya 2√3 N mtunda wa 20 cm. Ngati mphamvuyo ili pa ngodya ya 30^o Kutengera kusuntha kwa chaji yamagetsi, kodi kusiyana kwa mphamvu yamagetsi pa malo oyamba ndi omaliza a chaji yamagetsi ndi kotani?

Zodziwika:

Mphamvu (F) = 2√3 N

Mtunda (ma) = 20 cm = 0.2 m

Ngodya (θ) = 30^o

SE basi: Kusiyana kwa mphamvu zamagetsi

yankho;

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Mafunso atatu okhudza equation ya liwiro la Angular

1. Chinthu choyenda munjira yozungulira chimakhala ndi utali wa 0.5 m. Tinthu timeneti timatha kuphimba ngodya ya 60π rad mu masekondi 15. Dziwani liwiro la angular la chinthucho.

Zodziwika:

Ulalo wozungulira (r) = mamita 0.5

Ngodya (θ) = 60π rad

Nthawi yopuma (t) = masekondi 15

SE basi: Liwiro la angular (ω)

yankho;

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Mafunso atatu okhudza mphamvu yochokera ku equation

1. Galimoto yolemera matani 5 imasuntha kuchoka pamalo opumulira mu masekondi 50, kufika pa liwiro la 72 km/ola. Mphamvu ya galimotoyo ndi…

Zodziwika:

Kulemera (m) = matani 5 = 5000 kg

Liwiro loyambirira (vo) = 0

Liwiro lomaliza (vt) = 72 km/h = 20 m/s

Nthawi yopuma (t) = masekondi 50

SE basi: Mphamvu (F)

yankho;

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Mafunso atatu okhudza Impulse equation

1. Galimoto yolemera makilogalamu 250 imayenda ndi liwiro la makilomita 72 pa ola, kenako imayendetsedwa ndi mphamvu yosasintha kotero kuti mu masekondi 5 liwiro lake limafika makilomita 80 pa ola. Dziwani mphamvu ya injini kwa masekondi 5.

Zodziwika:

Kulemera kwa galimoto (m) = 250 kg

Liwiro loyambirira (v)_o) = 72 km/h = 20 m/s

Liwiro lomaliza (v)_t) = 80 km/h = 22 m/s

Nthawi yopuma (t) = masekondi 5

SE basi: Dziwani kutengeka (I)

yankho;

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Mafunso atatu okhudza Friction force equation

1. Chipika A cha makilogalamu atatu chimayikidwa patebulo kenako chimamangiriridwa ku chingwe chomwe chimalumikizidwa ndi miyala B = 2 kg kudzera mu pulley monga momwe zasonyezedwera. Kulemera ndi kukangana kwa pulleys kumanyalanyazidwa. Kuthamanga chifukwa cha mphamvu yokoka g = 10 m/s²Dziwani momwe dongosololi likuthamangitsira komanso momwe chingwe chikugwirira ntchito ngati:

a) tebulo losalala

b) tebulo lozungulira lokhala ndi coefficient ya kinetic friction ya 0.4

Zodziwika:

Kulemera kwa chipika A (m_A) = 3 kg

Unyinji wa thanthwe B (m_B) = 2 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s²

Kulemera kwa chipika A (w)_A) = mg = (3)(10) = 30 Newton

Kulemera kwa thanthwe B (w)_B) = mg = (2)(10) = 20 Newton

SE basi: Kuthamanga kwa dongosolo (a) ndi kukakamira kwa chingwe (T)

yankho;

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Mafunso atatu okhudza equation ya mphamvu yachibadwa

1. Buloko ili ndi kulemera kwa 5 kg. Ngati g = 10 m/s², dziwani:

a) kulemera kwa chipikacho

b) mphamvu yachibadwa ngati chipikacho chayikidwa pa ndege yathyathyathya

c) mphamvu yachibadwa ngati chipikacho chili pa ndege yopendekeka yomwe imapanga ngodya ya 30^o kupita mopingasa

Zodziwika:

Kulemera kwa chipika (m) = 5 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s²

SE basi: w, N pa ndege ndi N pa mtunda

yankho;

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Mafunso atatu okhudza equation ya chingwe

1. Chithunzi chili pansipa chikuwonetsa mabuloko atatu, omwe ndi A, B ndi C omwe ali pamalo osalala opingasa. Ngati kulemera A = 1 kg, kulemera B = 2 kg ndi kulemera C = 2 kg ndi F = 10 N, ndiye kuti mudziwe chiŵerengero cha mphamvu mu chingwe pakati pa A ndi B ndi mphamvu mu chingwe pakati pa B ndi C.

Zodziwika:

Kulemera kwa A (m_A) = 1 kg

Uzito B (m)_B) = 2 kg

Kulemera kwa C (m_C) = 2 kg

Mphamvu yokoka (F) = 10 N

SE basi: T_AB :T_BC

yankho;

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