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A 310-N child is in a swing that is attached to a pair of ropes 2.10 m long. Find the gravitational potential energy of the child–Earth system relative to the child's lowest position at the following times.

Respuesta :

Explanation:

Given that,

Force acting on the child, F = 310 N

Length of the ropes, d = 2.1 m

We need to find the gravitational potential energy of the child–Earth system relative to the child's lowest position when the ropes are horizontal. The potential energy is simply given by :

[tex]E=(mg)\times d\\\\E=F\times d\\\\E=310\ N\times 2.1\ m\\\\E=651\ J[/tex]

Hence, this is the required solution.

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