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23 Nov 2019
A 25 kg child on a 2m long swing is released from rest when the ropes of the swing make an angle of 30 with the vertical. (a) neglecting friction, find the child's speed at the lowest position . (b) If the actual speed of the child at the lowest postion is 2.00 m/s, what is the mechanical energy lost due to friction?
A 25 kg child on a 2m long swing is released from rest when the ropes of the swing make an angle of 30 with the vertical. (a) neglecting friction, find the child's speed at the lowest position . (b) If the actual speed of the child at the lowest postion is 2.00 m/s, what is the mechanical energy lost due to friction?