Calculate the power of a crane in watts,

Question:

 Calculate the power of a crane in watts, which lifts a mass of 100 kg to a height of 10 min 20 sec.

Solution:

P = WD/time = Fs cos θ/t = mgh cos θ/t

h = 10 m

t = 20 sec

F = mg = 1000

Therefore, P = 500 Watts

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