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The rope of a swing is 3.30 m long. Calculate the angle from the vertical at which a 91.0 kg man must begin to swing

The rope of a swing is 3.30 m long. Calculate the angle from the vertical at which a 91.0 kg man must begin to swing in order to have the same KE at the bottom as a 1530 kg car moving at 1.57 m/s (3.51 mph).

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