Question

Man of weighing 49kg carries a bag of 2kg. He climbs to the top of a building 100m tall in 5 minutes. Calculate the work done by the Man and the power he develops

Answer 1

work done = mass * gravity *height
= (49+2)*10*100
=51*1000
=51000J
now power = 51000/5*60
= 51000/300
=170
hence solved.