Where is the figure that contains the locations of where these points of the pendulum are? Anyway, I'll just provide my explanation about the energy conservation in a pendulum:
In a simple pendulum with no friction, mechanical energy is conserved. Total mechanical energy is a combination of kinetic energy and gravitational potential energy. As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
