Conservative Vs Non-conservative
Which force is non-conservative?
Select the correct option:
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About This Question
- Subject
- physics
- Chapter
- work, energy and power
- Topic
- conservative vs non-conservative
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Friction
- Conservative Force: A force where the work done depends only on the initial and final positions, not on the path taken. Mechanical energy is conserved.
- Non-Conservative Force: Work done depends on the actual path length. Energy is dissipated as heat, sound, etc.
- Analysis of Options:
- Gravitation, Spring, and Electrostatic forces are central forces whose work is path-independent.
- Friction always opposes motion. As the path length increases, more energy is lost. Work done over a closed loop is not zero.
- Result: Friction is a classic non-conservative (dissipative) force.
This easy difficulty physics question is from the chapter work, energy and power, covering the topic of conservative vs non-conservative. It appeared in the 2025 exam.
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