Question

When is a pendulum's kinetic energy equal to zero?
at the bottom of its swing
at the bottom of its swing
at the top of its swing
at the top of its swing
1/4 of the way through its swing
1/4 of the way through its swing
1/8 of the way through its swing

Answer 1

An active pendulum has the most kinetic energy at the lowest point of its swing when the weight is moving fastest.

An ideal pendulum system always contains a stable amount of mechanical energy, that is, the total of kinetic plus potential energy.