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21 October, 15:27

The spring constant, k, for a 22cm spring is 50N/m. A force is used to stretch the spring and when it is measured again it is 32cm long. Work out the size of this force. the

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  1. 21 October, 19:21
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    1) Convert cm in m

    2) Elastic energy formula:

    U=1/2kΔx²

    U=1/2*50 * (0.32-0.22)

    U=25*0.1

    U=2.5 J
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