Weight of box, (W) = 100 N
Height, (h) = 1.5 m
Acceleration due to gravity, (g) = 10 m/s2
(a) Work done = (Weight of body) × (Vertical distance)= (100) × (1.5) J=150 J
(b) The work done against gravity is stored in the box in the form of potential energy. So, energy transferred when one box is lifted is 150 J
(c)