Potential Energy (gravity)
Raise a 5 kg mass by 3 m (g = 10 m/s²). Increase in gravitational potential energy?
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About This Question
- Subject
- physics
- Chapter
- work, energy and power
- Topic
- potential energy (gravity)
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
150 J
- Definition: Gravitational potential energy (U) is the energy an object possesses due to its position in a gravitational field.
- Formula: ΔU=mgΔh.
- Substitute Values:
- m=5 kg
- g=10 m/s²
- Δh=3 m
- Calculation:
- ΔU=5×10×3=150 J.
- Conclusion: The potential energy increase is 150 J. This is exactly equal to the work done against gravity.
This easy difficulty physics question is from the chapter work, energy and power, covering the topic of potential energy (gravity). It appeared in the 2025 exam.
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