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The balance wheel of a watch oscillates with angular amplitude 1.8? rad and period 0.44 s....

The balance wheel of a watch oscillates with angular amplitude 1.8? rad and period 0.44 s. Find (a) the maximum angular speed of the wheel, (b) the angular speed of the wheel at displacement 1.8?/2 rad, and (c) the magnitude of the angular acceleration at displacement 1.8?/4 rad.

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