A boy of mass 50kg runs up a staricase of 45 steps in 9s. If the height of each step is 15cm, find his power. Take `g = 10m//s^2`

Answer

C

Explanation

`P = (W)/(t) = (mgh)/(t) = ((50kg)(10m//s^2)(6.75m))/(9s) (h = 45xx15cm = 675cm = 6.75m)`
= 375W