Ukusetshenziswa kokulondolozwa kwamandla okusebenza ukuze kushukunyiswe ezindaweni ezigobile - izinkinga nezixazululo

1. Ibhulokhi elingu-1-kg lishelela phansi endaweni ebushelelezi egobile. Thola amandla e-kinetic kanye nejubane lebhulokhi endaweni ephansi kakhulu. Ukusheshisa ngenxa yamandla adonsela phansi kungu-10 m/s ².

Kwaziwa:

Isisindo (m) = 1 kg

Ushintsho ekuphakameni (h) = 5 m

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

Okufunwayo: Amandla e-Kinetic (KE) kanye nesivinini sebhlokhi.

Isixazululo:

(a) Amandla e-Kinetic

Amandla okuqala omshini = amandla adonsela phansi

ME _o = PE = mgh = (1)(10)(5) = 50 amaJoules

Amandla okugcina omshini = amandla e-kinetic

ME _t = KE = ½ mv _t ²

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

Mina ₌ Mina _t

I-PE = KE

50 = KE

Amandla e-Kinetic (KE) = ama-Joules angu-50.

(b) Ijubane lebhulokhi

Umgomo wokonga amandla emishini:

Amandla okuqala omshini (ME _o ) = amandla okugcina omshini (ME _t )

Amandla adonsela phansi (PE) = amandla e-kinetic (KE)

50 = ½ mv ²

2(50) / m = v ²

100 / 1 = v ²

100 = v ²

v = √100

v = 10 m/s

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2. Into engamakhilogremu angu-2 iyashelela phansi ngaphandle kokungqubuzana. Iyini amandla e-kinetic kanye nejubane lento engamamitha amabili ngaphezu komhlabathi. Ukusheshisa ngenxa yamandla adonsela phansi kungu-10 m/s ²

Kwaziwa:

Isisindo (m) = 2 kg

Ushintsho ekuphakameni (h) = 10 – 2 = 8 m

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

Okufunwayo : amandla e-kinetic (KE) kanye nesivinini (v) kumamitha ama-2 ngaphezu komhlabathi.

Isixazululo:

(a) Amandla e-kinetic amamitha amabili ngaphezu komhlabathi

Amandla okuqala omshini = amandla adonsela phansi

ME _o = PE = mgh = (2)(10)(8) = 160 amaJoules

Amandla okugcina omshini = amandla e-kinetic

ME _t = KE = ½ mv _t ²

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

Mina ₌ Mina _t

I-PE = KE

160 = KE

Amandla e-kinetic (KE) amamitha ama-2 ngaphezu komhlabathi angama-160 Joules.

(b) Ijubane lento endaweni ephansi kakhulu

Isimiso sokulondolozwa kwamandla omshini:

Amandla okuqala omshini (ME _o ) = amandla okugcina omshini (EM _t )

Amandla adonsela phansi (PE) = amandla e-kinetic (KE)

160 = ½ mv ²

160 = ½ (2) v ²

160 = v ²

v = √160 = √(16)(10) = 4√10 m/s

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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 okusebenza ukuze kushukunyiswe endizeni ethambekele
11. Ukusetshenziswa kokulondolozwa kwamandla okusebenza ngomshini wokunyakaza okubonakalayo