Which method of generating electricity converts gravitational potential energy into electrical energy?

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

anchor = archer //

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.