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27 April, 02:44

The maximum height that an average person can jump from a crouched start is about 60 cm. By how much does the gravitational potential energy increase for a 72 kg person in such a jump?

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  1. 27 April, 04:42
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    423.36 J

    Explanation:

    Change in gravitational potential energy = mgh where m is the mass of the displaced object g is the acceleration due to gravity and h is the displacement along a plane parallel to gravity vector.

    From the question. m = 72kg, h=60cm=0.6m

    g=9.8m/s²

    Δ PE = 72kg*9.8m/s²*0.6m

    =423.36 J
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