A boy of mass 50 kg runs up staircase of 45 steps in 9 s. if the height of each step is 15 cm, find his power . take g =10 ms^-2
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3
Answer:
Given mass of body (m)=50kg
h=45×15=675cm=6.75m
t=9s δ=10m
Potential energy =mgh
=(50×10×6.75)5
=33755
Power of the body =
Time
Potentialenergy
=
9
3375
=375W
Answered by
2
Answer:
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