how can you say that friction is necessary evil
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Explanation:
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. Basic activities like walking and writing on a surface are possible due to friction.
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Answer:
friction is necessary in many life process
we ride on bike and cycle why because friction is acting on it
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