Question

a boy weighing 50 kg climbs up a vertical height of 100 m. Calculate the amount of work done by him. How much potential energy he gains ? (given g=9.8 m/s^2)

Answer 1

Given,

m=50 kg, g=9.8 m/s^2 , h=100 m

Solution,

Work done = P.E. gained

P.E. = m*g*h

= 50*9.8*100

= 49000 J