A body of mass 50 kg is lifted through a distance of 15 m. What is the work done?
If it took 2 min for lifting the mass, calculate the power?
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Answer:
m = 50 kg
s = 15 m
W = F. S
= 50 × 15
W = 750 J
now, power = Work/ time
P = 750/ 2min = 120 s
P = 750 / 120
P = 6.25 watt
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