The work done by the force of gravity on the object is zero. This is because the object’s initial and final positions have the same vertical height, meaning there’s no net displacement in the direction of the gravitational force (downwards). Therefore, no work is done by gravity.
Explanation:
Work done by a force is calculated as the force multiplied by the displacement in the direction of the force.
In this case, the force of gravity acts downwards, and the displacement is horizontal (since the initial and final points are on the same horizontal line).
Since the force and displacement are perpendicular, the work done is zero.
In simpler terms: If an object moves horizontally and doesn’t change its height, the force of gravity does no work on it.