Question

2. Why is friction referred to as a necessary evil?
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Answer 1

Answer:

$\huge{\underline{\underline{\mathbb{\red{ Frictional force causes a lot of losses in general upkeep and wear and tear of machinery</p><p>. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. .</p><p>.. Hence it is considered as a necessary evil .!}}}}}$

Answer 2

Answer:

friction is reffered to an necessary evil because without friction we can't walk .

it is our essential need .

without friction we can't even stand ...

Explanation:

hope it helps.....