Question

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5. Two rocks A and B of masses 100 kg and 20 kg respectively are setting at an edge of a cliff. Which
rock has a higher potential energy? When the rocks are made to fall on the ground, which rock will
make a deeper impression on the ground? Give reason.
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Answer 1

ANSWER:

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)

{hope this will help you friend}

Answer 2

THE ROCK B HAS HIGHER IMPRESSION ON GROUND.

BECAUSE THE POTENTIAL IS THAT THE GREATER THE MASS OF AN OBJECT MORE IS ITS POTENTIAL ENERGY AND