A simple pendulum has a mass 7.2 kg and a length 2.27 meters. How much initial velocity v in m/s must be given to the mass with the pendulum if it is initially hanging vertically downward in order for it to later reach an angle of 56.8 degrees

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy