Question

Question 5
A girl is carrying a school bag 3 kg on her back and moves 200 m on a leveled road. The work done against the gravitational force will be $(g=10m{s}^{-2})$

(a) $6\times {10}^3$ J
(b) 6 J
(c) 0.6 J
(d) zero

Answer 1

(d) zero

The height of the bag from the ground always remains constant throughout the journey, hence the work done against the gravitational force will be zero.