Question

A ball at the end of a string is swinging as a simple pendulum. Assuming no loss in energy due to friction, we can say for the ball that

A. the potential energy is maximum at the lowest position of the ball.
B. the potential energy is maximum where the kinetic energy is a minimum.
C. the potential energy is maximum where the kinetic energy is maximum.
D. the kinetic energy is maximum at each end of the motion.

Answer 1

Only (B) is correct:

PE + KE = constant

When Potential Energy is a maximum., the KE is zero

Also, PE depends on the height of the ball