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Work and Energy — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWork and Energy3 Marks
Question

What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.

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Answer

Gravitational potential energy: The potential energy due to the position of the body above the ground is gravitational potential energy.
Example: Water in the overhead tank has gravitational potential energy due to its height above the ground.
Elastic potential energy: The potential energy due to change in shape and size of the body is elastic. 
Example: A stretched rubber has elastic potential energy due to change in its shape.

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