Question

Define 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.

Example-: A frictional forces are non conservative forces.

Answer 2

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A nonconservative force is one for which work depends on the path taken. Friction is a good example of a nonconservative force. As illustrated in the given attachment work done against friction depends on the length of the path between the starting and ending points. Because of this dependence on path, there is no potential energy associated with nonconservative forces. An important characteristic is that the work done by a nonconservative force adds or removes mechanical energy from a system. Friction, for example, creates thermal energy that dissipates, removing energy from the system. Furthermore, even if the thermal energy is retained or captured, it cannot be fully converted back to work, so it is lost or not recoverable in that sense as well.

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