Question

Which of the following is a non-conservative force?

• A. Force on a particle executing S.H.M
• B. Gravitational force between two masses
• C. Centripetal force on a particle executing uniform circular motion
• D. Electrostatic force between two charges

Answer 1

The correct option is C Centripetal force on a particle executing uniform circular motion

We often call non-conservative forces as dissipative forces since energy is lost and the work done depends on the path taken. For example
1. In the case of frictional force, it depends on the path taken.
2. Particle executing uniform circular motion

But in case of conservative forces the work done is unaffected by the path taken. For example;
1. Particle executing S.H.M
2. Gravitational forces
3.Electrostatic force