Question

friction is a necessary evil. explain. ​

Answer 1

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 .

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Answer 2

Answer:

Friction is a necessary evil because friction is needed by us in almost all aspects of life. We are able to walk,write, slide etc is because of friction. It is also called evil because some amount of our energy is used to overcome friction. It also causes wear and tear of machinery.