Why friction is called a necessary evil?

1.	Why friction is called a necessary evil?
Answer» 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 . Explanation:

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 .

Explanation:

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Why friction is called a necessary evil?​

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Why friction is called a necessary evil?