Abrick of mass 2.3 kg is lifted to a height of 1.9 m. how much gravitational potential energy is added to the brick? acceleration due to gravity is g = 9.8 m/s2.

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.