Question

Why is the friction is a necessary evil?

Answer 1

Friction is called a necessaryevil because we can not do anything without friction while it is also show ill effects .No movement would come to an end without friction. nobody would be at rest without friction.Frictio is necessary for making grip and bringing movements at rest.

Answer 2

Answer:

Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. ... Hence it is considered as a necessary evil .