A boy of mass 30 kg can go up 20 steps, each of height 10 cm in 25 secs. Calculate the power of the boy.
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Answer:
36 W
Explanation :
Power = Work done / Time
Here , Work done i.e. Potential Energy = mgh
Height = 20 steps x 15cm ( height of ech step ) = 300 cm = 3m
P.E. = mgh
PE = 30 Kg x 10 m/s² x 3 m
PE = 900 J
Power = Work done / Time
= 900 J / 25 seconds
= 36 W
Answered by
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Answer:
36 W is the answer for your question
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