Ukusetshenziswa kokulondolozwa kwamandla okusebenza ukuze kushukunyiswe endizeni ethambekele - izinkinga nezixazululo

1. Ibhulokhi liwela phansi endaweni ebushelelezi ethambekele ngaphandle kokungqubuzana . Iyini ijubane lebhulokhi uma lifika phansi. Ukusheshisa ngenxa yamandla adonsela phansi kungu-10 m/s ²

Kwaziwa:

Ukuphakama (h) = 8 m

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

Okufunwayo : ijubane (v)

Isixazululo :

Amandla okuqala omshini (ME _o ) = amandla adonsela phansi (PE)

ME _o = PE = mgh = m (10)(8) = 80 m

Amandla okugcina omshini (ME _t ) = amandla e-kinetic (KE)

ME _t = KE = ½ mv ²

Isimiso sokulondolozwa kwamandla omshini sithi amandla okuqala omshini = amandla okugcina omshini:

Mina ₌ Mina _t

80 m = ½ mv ²

80 = ½ v ²

160 = v ²

v = √160 = √(16)(10) = 4√10 m/s

[irp]

2. Into engu-1-kg ishelela phansi ngamamitha angu-8. Thola amandla e-kinetic ngemva kokuba into ihambe ngamamitha angu-5… Ukusheshisa ngenxa yamandla adonsela phansi g = 10 m/s ²

Kwaziwa:

Isisindo (m) = 0.2 kg

d = amamitha angu-5

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

Okufunwayo : amandla e-kinetic (KE)

Isixazululo:

isono 30 ^o = h / d

0.5 = amahora / 5

h = (0.5)(5) = amamitha angu-2.5

Ushintsho ekuphakameni kwento lungamamitha angu-2.5.

Amandla okuqala omshini (ME _o ) = amandla adonsela phansi (PE)

ME _o = PE = mgh = (1)(10)(2.5) = 25 amaJoules

Amandla okugcina omshini (ME _t ) = amandla e-kinetic (KE)

ME _t = KE

Umgomo wokulondolozwa kwamandla omshini uthi amandla okuqala omshini = amandla okugcina omshini:

Mina ₌ Mina _t

25 = KE

Amandla e-kinetic = ama-Joules angu-25.

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1. Umsebenzi owenziwa ngezinkinga zamandla nezixazululo
2. Izinkinga zamandla e-kinetic kanye nezixazululo zomsebenzi
3. Izinkinga nezixazululo zesimiso samandla okusebenza-okusebenza ngomshini
4. Izinkinga zamandla adonsela phansi kanye nezixazululo ezingaba khona
5. Amandla angaba khona ezinkinga zentwasahlobo ezinwebekayo nezixazululo
6. Izinkinga zikagesi nezixazululo
7. Ukusetshenziswa kokulondolozwa kwamandla omshini ukuze kuqhutshekwe nokuwa kwamahhala
8. Ukusetshenziswa kokulondolozwa kwamandla omshini wokunyakaza okuphezulu nokwehla ekunyakazeni kokuwa kwamahhala
9. Ukusetshenziswa kokulondolozwa kwamandla okusebenza ukuze kushukunyiswe endaweni egobile
10. Ukusetshenziswa kokulondolozwa kwamandla omshini ukuze kushukunyiswe endizeni ethambekele
11. Ukusetshenziswa kokulondolozwa kwamandla okusebenza ngomshini wokunyakaza okubonakalayo