Which force is a non-conservative?
Correct answer: B. Friction force
- A. Gravitational force
- B. Friction force
- C. Electrostatic force
- D. Magnetic force
Explanation
Only frictional force is non-conservative. The work done by this force depends upon the path taken and the energy is not conserved. All the others are conservative forces.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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