Question

a boy of mass 55kg skips at the rate of 15 steps per minute through an average height of 25cm. calculate the power developed
​

Answer 1

Answer:

Work=F×s

Force=m×g

In both the cases mass is equal and displacement is also equal.

F=55×2=110N

Power=work/time

P(1st)=110/2=55

P(2nd)=110/55=2

Hence both the powers are in the ratio of 55:2=55:2.