Izinkinga Ezixazululiwe ku-Basic Physics

Imibuzo emi-3 mayelana ne-Gravity equation

1. Izinhlayiya ezintathu ngasinye esinesisindo esingu-1 kg ziseziqongweni zonxantathu olinganayo onezinhlangothi ezi-1 m ubude. Zingakanani amandla adonsela phansi atholakala yinhlayiya ngayinye ekhombayo (ku-G)?

Isixazululo

Ubukhulu bamandla adonsela phansi atholwa yinye yezinhlayiya.

F ₁₂ = G (m ₁ )(m ₂ ) / r ² = G (1)(1) / 1 ² = G/1 = G

F ₁₃ = G (m ₁ )(m ₃ ) / r ² = G (1)(1) / 1 ² = G/1 = G

Amandla adonsela phansi aphumela endaweni 1:

Funda kabanzi

Imibuzo emi-3 mayelana nezibalo zensimu kagesi

1. Ibhola eliqhubayo elinobubanzi obuyi-10 cm linomshini kagesi ongama-500 μC. Amaphuzu A, B, no-C ahambisana nendawo ephakathi yebhola ebangeni elingama-12 cm, 10 cm kanye no-8 cm ngokulandelana ukusuka enkabeni yebhola. Bala amandla ensimu kagesi kumaphuzu A, B, kanye no-C!

Kuyaziwa:

Irediyasi yebhola eliqhubayo (R) = 10 cm = 0.1 m

Ishaja kagesi (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

I-Coulomb constant (k) = 9 x 10 ⁹

Okufunwayo: Amandla ensimu kagesi endaweni A (EA ₎ , endaweni B (EB ₎ kanye nendawo C ( _EC )

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-equation eqhubekayo yaseNtwasahlobo

1. Intwasahlobo exutshwe ngokukhululeka inobude obungu-10 cm. Engxenyeni ekhululekile, isisindo esingamagremu angu-200 siyaxhonywa ukuze ubude bentwasahlobo bube ngu-11 cm. Uma u-g = 10 m/s ² , iyini i-spring force constant?

Kwaziwa:

Ubude bokuqala bentwasahlobo (y ₁ ) = 10 cm = 0.10 m

Ubude bokugcina bentwasahlobo (y ₂ ) = 11 cm = 0.11 m

Ukushintsha kobude bentwasahlobo (Δy) = 0.11 – 0.10 = 0.01 amamitha

Isisindo somthwalo (m) = 200 amagremu = 0.2 kg

Isisindo somthwalo (w) = mg = (0,2)(10) = 2 amaNewton

Okufunwayo: I-Spring constant (k)

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-Potential difference equation

1. Ishaja kagesi ihanjiswa ensimini kagesi efanayo enamandla angu-2√3 N ibanga elingama-20 cm. Uma isiqondiso samandla sise-engeli engu-30 ^o kuya ekufudukeni kweshaja kagesi, uyini umehluko emandleni kagesi angase abe khona ezindaweni zokuqala nezokugcina zeshaja kagesi.

Kwaziwa:

Amandla (F) = 2√3 N

Ibanga (ama) = 20 cm = 0.2 m

I-engeli (θ) = 30 ^o

Kufunwa: Umehluko wamandla kagesi

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-Angular velocity equation

1. Into ehamba endleleni eyindilinga inobubanzi obungu-0.5 m. Le nhlayiya iyakwazi ukumboza i-engeli engu-60π rad ngemizuzwana eyi-15. Thola ijubane le-engeli lento.

Kwaziwa:

Irediyasi (r) = amamitha angu-0.5

I-engeli (θ) = 60π rad

Isikhawu sesikhathi (t) = imizuzwana eyi-15

Okufunwayo: Ijubane le-angular (ω)

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-equation yamandla ephumela

1. Imoto enesisindo esingamathani ama-5 isuka endaweni yokuphumula ngemizuzwana engama-50, ifinyelela isivinini esingamakhilomitha angama-72 ngehora. Amandla emotweni…

Kwaziwa:

Isisindo (m) = amathani ama-5 = 5000 kg

Isivinini sokuqala (vo) = 0

Isivinini sokugcina (vt) = 72 km/h = 20 m/s

Isikhawu sesikhathi (t) = imizuzwana eyi-50

Kufunwa: Amandla (F)

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-Impulse equation

1. Imoto enesisindo esingama-250 kg ihamba ngesivinini esingama-72 km/ihora, bese isheshiswa ngamandla angaguquki ukuze ngemizuzwana emi-5 ijubane layo libe ngama-80 km/ihora. Thola i-pulse imizuzwana emi-5.

Kwaziwa:

Isisindo semoto (m) = 250 kg

Isivinini sokuqala (v _o ) = 72 km/h = 20 m/s

Isivinini sokugcina (v _t ) = 80 km/h = 22 m/s

Isikhawu sesikhathi (t) = imizuzwana eyi-5

Okufunwayo: Nquma ukushukuma (I)

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-Friction force equation

1. Ibhulokhi A 3 kg ibekwa etafuleni bese iboshelwa entanjeni exhunywe etsheni B = 2 kg nge-pulley njengoba kuboniswe. Ubunzima kanye nokungqubuzana kwama-pulley akunakwa. Ukusheshisa ngenxa yamandla adonsela phansi g = 10 m/s ² . Nquma ukusheshisa kwesistimu kanye nokucindezeleka entanjeni uma:

a) itafula elibushelelezi

b) ithebula elingalingani elinesilinganiso sokungqubuzana kwe-kinetic esingu-0.4

Kwaziwa:

Isisindo sebhulokhi A (m _A ) = 3 kg

Isisindo sedwala B (m _B ) = 2 kg

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s ²

Isisindo sebhulokhi A (w _A ) = mg = (3)(10) = 30 amaNewton

Isisindo sedwala B (w _B ) = mg = (2)(10) = 20 amaNewton

Okufunwayo: Ukusheshisa kwesistimu (a) kanye nokucindezeleka entanjeni (T)

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-Normal force equation

1. Ibhulokhi linesisindo esingu-5 kg. Uma g = 10 m/s ² , thola:

a) isisindo sebhulokhi

b) amandla avamile uma ibhlogo libekwe endaweni eyisicaba

c) amandla avamile uma ibhlogo lihlala endizeni ethambekele eyakha i-engeli engu-30 ^o kuya phezulu

Kwaziwa:

Isisindo sebhulokhi (m) = 5 kg

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s ²

Kufunwa: w, N endizeni kanye no-N ekwehleleni

Isixazululo:

Funda kabanzi

Imibuzo emi-3 mayelana ne-Rope tension equation

1. Isithombe esingezansi sibonisa amabhlogo amathathu, okungu-A, B no-C atholakala endizeni ebushelelezi evundlile. Uma isisindo A = 1 kg, isisindo B = 2 kg kanye nesisindo C = 2 kg kanye no-F = 10 N, khona-ke nquma isilinganiso sokucindezeleka entanjeni phakathi kuka-A no-B nokucindezeleka entanjeni phakathi kuka-B no-C.

Kwaziwa:

Isisindo se-A (m _A ) = 1 kg

Isisindo B (m _B ) = 2 kg

Isisindo se-C (mC ₎ = 2 kg

Amandla okudonsa (F) = 10 N

Kufunwa: T _AB : T _BC

Isixazululo:

Funda kabanzi