How does the pendulum to illustrate the conservation of energy?

When the pendulum is at it's highest point of it's swing, the pendulum is momentarily motionless as it changes direction. At this point, the pendulum has ZERO kinetic energy, and the most potential energy. When the pendulum is swinging down again, that potential energy is coverted into kinetic energy.

Since the energy is being converted, not created, the swinging pendulum illustrates the law of consevation of energy.

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the sun.jul 26, 2018

explanation:

unlike poles attract