Physics
Physics, 04.04.2020 08:36, 27lcasselberry

A child with a weight of 140 N swings on a playground swing attached to 2.20 m long chains. What is the gravitational potential energy (in J) of the child-earth system relative to the child's lowest position at the following times(a) when the ropes are horizontal (b) when the ropes make a 25.0° angle with the vertical (c) when the child is at the bottom of the circular arc

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A child with a weight of 140 N swings on a playground swing attached to 2.20 m long chains. What is...

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