A 270-kg child on a 100-m-long swing is released from rest, Physics

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A 270-kg child on a 100-m-long swing is released from rest

Solve the following question:

Question: A 27.0-kg child on a 1.00-m-long swing is released from rest when the ropes of the swing make an angle of 27.0Ã‚Â° with the vertical.

Part I: Neglecting friction, find the child's speed at the lowest position.

m/s

Part II: If the actual speed of the child at the lowest position is 1.30 m/s, what is the mechanical energy lost due to friction?

If possible just a brief explanation how you got the answer?

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Physics: A 270-kg child on a 100-m-long swing is released from rest

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Physics: A 270-kg child on a 100-m-long swing is released from rest

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