A rock is lying on a rock ledge that is 3 m high. The rock as 120 J of potential energy. What is the mass of the rock? Have a great day!

asked Nov 6, 2022 90.2k views

3 votes

A rock is lying on a rock ledge that is 3 m high. The rock as 120 J of potential energy. What is the mass of the rock?

Have a great day!

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$\\ \sf\Rrightarrow PE=mgh$

$\\ \sf\Rrightarrow m(10)(3)=120$

$\\ \sf\Rrightarrow 30m=120$

$\\ \sf\Rrightarrow m=4kg$

Manav Dubey answered Nov 11, 2022

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