Answer:
735 J
Explanation:
mass of box, m = 15 kg
Height, h = 5 m
Work is defined as the product of force and the displacement in the direction of force.
W = F x S
Work is a scalar quantity and its SI unit is Joule.
Here, Force, F = m x g = 15 x 9.8 = 147 N
So, W = 147 x 5 = 735 J
Thus, the work is 735 J.