Conservative Vs Non-conservative
Which force is necessarily non-conservative?
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About This Question
- Subject
- physics
- Chapter
- work, energy and power
- Topic
- conservative vs non-conservative
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Kinetic friction
- Conservative Force: Work done depends only on initial and final positions, not the path. Mechanical energy is conserved. Examples: Gravity, Spring force, Electrostatic force.
- Non-Conservative Force: Work done depends on the actual path taken. These forces typically dissipate mechanical energy into thermal energy.
- Kinetic friction is the classic example because its direction always opposes motion, so the integral ∫F⋅ds always accumulates negative work proportional to the path length.
This medium 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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