Name: Work Done on a Block
Uploaded: 2019-07-19
Duration: 3 min 57 s
Description: Check out this solved illustration based on calculating work done on an object by forces acting at different angles. Just click this video to explore!

Question

What are the conservative and non-conservative forces? Explain with examples. Mention some of their properties?

Accepted Answer

Conservative forces:- If the work done by the forces in moving a particle from one point to other does not depend on the path, the force is said to be conservative. For example, gravitational force, coulomb force, etc. The work done by a conservative force in a closed path is zero. The negative of the work done by the conservative force is equal to the change in potential energy of the system.

Non-conservative forces:- If the work done by the forces while moving a particle from one point to another depends on the path, the force is said to be non-conservative. For example, frictional force, air resistance, viscous force etc. A non-conservative force can change the mechanical energy of a system. In the case of friction force, it can reduce the mechanical energy of the system.

What are the conservative and non-conservative forces? Explain with examples. Mention some of their properties?

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