A conservative force is a force with the property that the work done in moving a particle between two points is independent of the path taken.Equivalently, if a particle travels in a closed loop, the net work done (the sum of the force acting along the path multiplied by the distance  travelled ) by a conservative force is zero.
gravity is an example of a conservative force, while friction  is an example of a non-conservative force.

T14855 is of trial GRE course. It is active in your account. T14858 is of Paid GRE course.