Solve for questi

Dear student

Let M be the mass of the man. So, net work done by him is,

W = mass raised X acc. due to gravity X height

=> W = (50 + M) X 9.8 X 40

Power = Work done/time taken

=> 1568 = [(50 + M) X 9.8 X 40]/25

=> M = (1568 X 25)/(9.8 X 40) – 50

=> M = 50 kg

Regards