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In a science museum, a 120·kg brass pendulum bob swings at the end of a 12·m...

In a science museum, a 120·kg brass pendulum bob swings at the end of a 12·m long wire. The pendulum is started at exactly 8:00 every morning by pulling it 1.7·m to the side and releasing it. Due to its compact shape and smooth surface, the pendulum's damping constant is only 0.008·kg/s. (a) At exactly noon, how many oscillations will the pendulum have completed? (b) What will its amplitude be at noon? m

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