Question

why is friction considered a necessary evil? ​

Answer 1

Explanation:

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

Answer 2

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Friction is considered as an necessary evil because it is necessary for various life activities but it aldo causes many problems. It is needed as it helps in walking and running but it causes wear and tear of things.

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