1) A pendulum bob of length 60cm is pulled to an angle of 16 degrees. The pendulum is released. When the pendulum has decreased by 60% of its…

1) A pendulum bob of length 60cm is pulled to an angle of 16 degrees. The pendulum is released. When the pendulum has decreased by 60% of its original height, determine:

a. The pendulum’s potential energy

b. The pendulum’s kinetic energy and its velocity at the moment

c. The pendulum’s mechanical energy