A 230-n child is in a swing that is attached to ropes 1.90, Ask an Expert

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A 230-N child is in a swing that is attached to ropes 1.90 m long. Find the gravitational potential energy associated with the child relative to her lowest position at the following times.

a) when the ropes are horizontal

b) when the ropes make a 33.0° angle with the vertical

c) when the child is at the bottom of the circular arc

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