Question

why friction is called a necessary evil? ​

Answer 1

Answer:

Friction is said to be a necessary evil because it is useful as well as harmful. friction helps us to walk, write, hold things, lift objects. So it is necessary in our lives. Without friction many essential processes can not be done.

Answer 2

Answer:

Why frictional force is called a necessary evil?

Answer :- Frictional force causes a lot of losses in general upkeep and wear and tear of machinery.But almost all necessary tasks cannot be carried out without the friction. Daily-life activities like walking and writing on a surface are possible due to friction. Hence it is considered as a necessary evil .

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Explanation:

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