I have no idea what the Q factor is in the following problem: Consider a simple pendulum (point mass bob) 0.50 m long with a Q of 400. How long does it take for the amplitude (assumed small) to decrease by two-thirds? If the amplitude is 3.0 cm and the bob has mass 0.20 kg, what is the initial energy loss rate of the pendulum in watts? (The answer should have a negtive sign.) If we are to stimultate resonance with a sinusoidal driving force, how close must the driving frequency be to the natural frequency of the pendulum?