When a ball rises vertically to a height h and returns to its original point of projection, the work done by the gravitational force is
A) 0.
B) −mgh.
C) +mgh.
D) −2mgh.
E) +2mgh.

Question

Quizplus · Accepted Answer

When a ball rises vertically to a height h and returns to its original point of projection, it comes back to its initial velocity as well. Therefore, the net work done by the gravitational force is zero.

When a Ball Rises Vertically to a Height H and Returns