Two rocks A and B of masses 100kg and 20kg respectively are setting at an edge of a cliff. Which rock has higher potential energy? When the rock are made to fall on the ground? Give reason
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Answer:
A rock
Explanation:
Potential energy is the property of a body by virtue of it's position, and we calculate potential energy by P= mgh
where m=mass, g= acceleration due to gravity, h= height
since, the rocks are at the same height, and gravity will produce same acceleration on both the rocks, the one with higher mass will have higher potential energy. (100*g*h) as compared to the other (20*g*h)
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