Question

a 50kg man with 20kg load on his head climbs up 20 steps of 0.24 m height each.the work done by man on block during climbing is

Answer 1

total mass = 50+20= 70kg
Total displacement= 20x0.24m= 4.8m
Force= ma= 70x10= 700N

Work done= force x displacement
W= 700x4.8
W= 3360 J