Amanethiwekhi eGurumuda
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:
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:
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:
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:
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:
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:
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:
3 Izinkinga nezixazululo mayelana ne-Moment of inertia equation
1. Isilinda esiqinile sinobubanzi obungu-8 cm kanye nesisindo esingu-2 kg. Okwamanje, ibhola eliqinile linobubanzi obungu-5 cm kanye nesisindo esingu-4 kg. Uma izinto ezimbili zijikeleza nge-axis phakathi nendawo yazo, nquma isilinganiso sesikhathi sokungapheleli kwesilinda kanye nebhola.
Kwaziwa:
Irediyasi yesilinda eqinile (r) = 8 cm = 0.08 m
Isisindo sesilinda esiqinile (m) = 2 kg
Irediyasi yebhola eqinile (r) = 5 cm = 0.05 m
Isisindo sebhola eliqinile (m) = 4 kg
Okufunwayo: Ukuqhathaniswa kwesikhathi sokungahlali kahle kwesilinda nebhola
Isixazululo :
Izinkinga nezixazululo ezi-3 mayelana ne-Momentum equation
1. Uma ijubane lento liba ngokuphindwe kahlanu ijubane layo lokuqala, khona-ke umfutho wento uba ….. umfutho wayo wokuqala.
Kwaziwa:
Isivinini sokuqala = v
Isivinini sokugcina = 5v
Isisindo = 1
Okufunwayo: Umfutho
Isixazululo:
Izinkinga nezixazululo ezi-3 mayelana ne-Speed equation
1. Imoto iya eningizimu ibanga elingamamitha ayi-100 ngomzuzu owodwa bese ijika iye empumalanga ibanga elingamamitha ayi-120 ngemizuzu engu-0.5. Nquma isivinini esimaphakathi semoto.
Kwaziwa:
Ibanga eliphelele = amamitha ayi-100 + amamitha ayi-120 = amamitha angama-220
Isikhathi esiphelele = umzuzu o-1 + imizuzu engu-0.5 = imizuzu engu-1.5 = imizuzwana engu-90
Okufunwayo: Isivinini esimaphakathi
Isixazululo: