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A pendulum (L = 2.00 m, m = 0.500 kg) is oscillating with an amplitude of...

A pendulum (L = 2.00 m, m = 0.500 kg) is oscillating with an amplitude of 5.00 cm.

a) What is the energy of the pendulum?(mJ)

b)The pendulum’s energy loss (due to damping) is replaced in a clock by allowing a 2.00-kg mass to drop 1.00 m in 1 week. What average percentage of the pendulum’s energy is lost during one cycle?(%)

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