Question

A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled 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

The correct option is D zero

Answer is D.

The amount of work done is expressed in the equation: $workdone=force\times distance$. In this case, the total work done is zero as the displacement is perpendicular to the applied force.