Question

A cinder block is sitting on a platform 20 m high. It weighs 79 n. The block has _____________ energy.

Answer 1

Answer is 1580J

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Answer 2

Given that,

Weight of the block, F = mg = 79 N

Height of block, h = 20 m

To find,

The potential energy of the block,

Solution,

When an object is placed at some height, it will have potential energy. It is given by :

$E=mgh\\\\E=F\times h\\\\E=79\ N\times 20\ m\\\\E=1580\ J$

So, the potential energy of the block is 1580 J.

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Potential energy

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