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26 September, 19:44

A crane lifts a large cement slab weighing 2,200 n to a height of 15 m. what is the pe of the slab? remember, weight is measured in newtons (n), and is equal to mass times gravity.

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  1. 26 September, 19:49
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    Potential Energy is calculated through the equation,

    PE = m x g x h

    where m is the mass, g is the acceleration due to gravity, and h is the height. Since, weight is equal to mass times gravity, PE may also be calculated through the equation,

    PE = W x h

    Substituting the known values,

    PE = (2,200 N) x (15 m)

    PE = 33,000 J
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