When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the pendulum’s motion at that point?

Answer 1

At the very top of the swing, when kinetic energy (KE) is equal to 0, the pendulum has reached its maximum potential energy. This means that the pendulum has momentarily stopped moving and has fully converted its kinetic energy into potential energy at that point. The pendulum is at rest at this point in its motion.