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A book of mss 1 kg is raised through a h...

A book of mss 1 kg is raised through a height 'h'. If the potential energy increased by 49 J, find the height raised.

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The increase in potential energy = mgh
That is , mgh = 49 J
(1) (9.8)h = 49 J
The height raised, `h = (49) //(1xx9.8)`
= 5m
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