Question

compared to the pendulum's kinetic energy at position B , its gravitational potential energy at position A is a. half as great 2. twice as great 3. the same 4. four times as great

Answer 1

At the maximum height of its motion, a pendulum has only potential energy and at the bottom it has only kinetic energy. At points in the middle, the kinetic energy and potential energy add up to the initial value of potential energy. We can use this to find energy at different points.