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 syst

Question

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.

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Ngọc Khuê 5 years 2021-08-25T02:59:12+00:00 1 Answers 71 views 0

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  1. thucuc
    0
    2021-08-25T03:00:42+00:00
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    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 :

    E=(mg)\times d\\\\E=F\times d\\\\E=310\ N\times 2.1\ m\\\\E=651\ J

    Hence, this is the required solution.

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