a body of mass 40kg runs up a flight it of 50steps , each of 10 cm is high in 5 second.find the power developed by the boy. ?
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Answer:
Here is the answer my friend
Explanation:
work Done can be calculated as
W = F * d
= m * g * d
= 40 * 10 * 50 *10
= 20000
= 20 K joule
thus 20 K J of work is done by the boy
Power Dissipated can be calculated as
P = W / t
= 20 /5
= 4 K Watt
thus power dissipated is 4 KW
Hope it Helps !!
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