The sum of kinetic energy and potential energy is always constant in the absence of external force and at any given time.
What does the law of conservation of energy say about up and down energy?
When the ball is at the top of the swing, all the energy of the pendulum is potential energy. When the ball is at the bottom of the swing, all the energy of the pendulum is kinetic energy. The total energy of the ball remains the same but is constantly being exchanged between the form of motion and the potential form.
When an object is lifted by altitude, its potential energy increases. Since gravity works to raise its altitude, that energy is also called gravitational potential energy.
Learn more about the law of conservation of energy here: https://brainly.com/question/166559
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