Friction is actually the force which is resisting the relative motion of two surface that are in contact. It is derived from the electromagnetic forces between the atoms and electrons.
The positive effects of friction are as follows:
- Friction can do positive work in inertial frame of reference.
- Friction is usually used to mix materials such as in polishing or in the technique of friction welding.
The negative effects of friction are as follows:
- Physical wear and tear of objects and parts is a major negative effect of friction.
- Materials usually degrade quickly due to continuous friction.
- Heat is often released as a result of friction between two parts.
- It can also result in erosion of surfaces.
- Bearing seizure can occur due to it.
- Corrosion can also occur due to friction.