Question

A man weighing 60 kg runs up a flight of stairs 4m high in 3s Calculate the power developed by him.

Answer 1

According to Question

It is given that

Mass of Man   =  m = 60 Kg
Height of stairs   =  h  = 4 m
Time taken = t = 3 Sec

We know formula of Power as

Power = m * g * h
   Thus

Power = 60 * 10 * 4
           = 2400 Pa