A 25-kg child is sitting on the seat of a swing 10 m long
A 25-kg child is sitting on the seat of a swing 10 m long. Her father pulls the swing back until the swing makes an angle of 37 degrees with the vertical. The gain in potential energy of the child at this point is?
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a 25-kg child is sitting on the seat of a swing 10 m long her father pulls the swing back until the swing makes an
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