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A 31.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the...

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Physics

A 31.0-kg child on a 3.00-m-long swing is released from restwhen the ropes of the swing make an angle of 31.0° with thevertical.

(a) Neglecting friction, find the child's speed at the lowestposition.

(b) If the actual speed of the child at the lowest position is2.50 m/s, what is the mechanical energy lost due to friction?

Answer & Explanation Solved by verified expert
3.9 Ratings (589 Votes)
aFirst find the height hWhen child    See Answer
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