Physics - Circular Motion Question with Solution | TestHub

In vertical circular motion under gravity, the forces acting on the particle are the gravitational force and the tension in the string.

The tension is always perpendicular to the velocity of the particle, so the work done by the tension is zero.

The gravitational force is a conservative force. Since no non-conservative forces do work on the particle, the total mechanical energy (sum of kinetic and potential energy) of the particle remains constant at all positions along the path.

Therefore, the total energy is conserved.

Answer: is conserved.