Question

Friction force is necessary evil .Comment on this statement

Answer 1

Since, Frictional force is a force that opposes the cause of Motion, i.e. bringing obstruction to the body which is moving/ going to move. Hence it is said as evil. Moreover, it is also necessary for any body in motion as it helps the body to stop moving after some time, or else it will continue to move (if there was no friction). Being an Evil (obstruction to motion) it is also necessary (helps to stop), hence, regarded as a NECESSARY EVIL.

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