Physics
In which case will the potential energy decrease ?
- Compressing a spring
- Stretching a spring
- Moving a body against gravitation
- A bus descending down a steep hill
Work, Energy & Power
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Answer
A bus descending down a steep hill
Reason — Potential energy decreases when the height of a body decreases.
So,
- Compressing or stretching a spring increases elastic potential energy, and
- Moving a body against gravity increases gravitational potential energy.
- When a bus descends a hill, its height decreases, so its potential energy decreases.
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