Question

porter lifts a luggage of 15 kg from the ground and puts it on his head `1.5 m` above the ground. Calculate the work done by him on the luggage

Answer 1

Mass of luggage, `m = 15 kg` and displacement, `s = 1.5 m`.
Work done, `W = F xx s = mg xx s`
`=15 kg xx 10 ms^(2) xx 1.5 m`
`= 225 kg m s^(2) m`
Work done is 225 J.