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A mass of M = 13.0 kg is suspended from the ceiling at the end of...

A mass of M = 13.0 kg is suspended from the ceiling at the end of a 2-m cable of negligible mass. If released from rest when the string makes an angle of 20◦ from the horizontal, what will be the speed of the mass as it passes through the lowest point of its swing? (the answer is 1.54)

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