Question

what is non- conservative forces

Answer 1

Answer-:

Non- Conservative Force-: A force is said to be non-conservative, if work done by or against the force in moving a body from one position to another, depends on the path followed between these two positions.

=>For example, frictional forces are non-conservative forces. If a body is moved from a position A to another position B on a rough table, work done against frictional force shall depend on the length of the path between A and B

and not only on the positions A and B.

Answer 2

$\bf{\huge{\mathfrak{\boxed{\red{Non\:Conservative\:}}}}}$

A force is said to be non-conservative when work done against it is not conserved by the body which is moved by the force.

$\bf{\huge{\mathfrak{\boxed{\red{Example :\:}}}}}$

Frictional force: When a body is moved against friction, work is required to overcome friction. Friction is always an opposing force, and the work done against friction depends not only on the initial and final positions of the body but also on the length of the path traversed.