Question

A boy of mass 50kg runs up a staircase of 45 steps in 9 seconds.If the height of each step of the staircase is 15 cm , find the power of the boy.

Answer 1

power = work done / time
= mgh/t
= 50*45*0.15*10/9
=375
where 0.15 m = 15 cm

Answer 2

Answer:

Hope it helps.....................