Question

A man of mass 80kg climbs up 15 steps each 25cm high in 7.5 seconds. Calculate the power that the man develops ​

Answer 1

Explanation:

Given ,

mass of man = 80 kg

height is claimed by the man = 30 × 12.5 = 375

cm = 3.75 m

time taken = 30 sec

Now , power = weight of the man × height is claimed by the man / time taken

= mass × acceleration due to gravity × 3.75 / 30

= 100 W .