A person of mass 40kg runs up a staircase of 80 steps in 25 seconds.if height of each step is 15cm .find his power
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Explanation:
Mass=40kg
Time taken=25s
Height=80×0.15(converted cm into m by ÷100)
=12
P=Work done÷time taken
(Force×displament)÷time taken
(Mg×h)÷time taken
Puttting values, we get
= ( 40×12 )÷25
= 480÷25
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