A 25 kg swings on a playground swing if the swing hangs
A 25 kg swings on a playground swing. If the swing hangs down 3 m from the top bar, and the child swings out 20 degrees, what is the height above the ground of the child at this angle and what is the change in potential energy of the child?
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a 25 kg swings on a playground swing if the swing hangs down 3 m from the top bar and the child swings out 20 degrees
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