A weight lifter lifts 240 kg from the ground to a height of 2.5 m in 3 second
his power is?
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Mass = 240kg
height = 2.5m
t = 3seconds
Work done = mgh
=>240×10×2.5
=>6000J
Power = Work done/time = 6000/3 = 2000Js-¹ = 2000Watt
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