Question

why friction called a necessary evil​

Answer 1

Here's your answer dear (◔‿◔)(◔‿◔)(◔‿◔)

To understand this topic, I want to give you some example:

To sit on bench, to hold pen to write, to ride bicycle or bike on road etc;we need an very important force which is called Frictional Force , without this we will be just like in space....

But due to this force only we have to change our Tyre of any vehicle, due to this force only we have got wear and tear in the machines .....

By these example we can say that Frictional Force is important but is cause some lose also....

Hope this helps you (θ‿θ)(θ‿θ)

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Answer 2

Answer:

• frictional force causes a lot of losses in general a cheap and wear and Tear of machinery hence it is considered as a level but almost all circular toss cannot be carried out without the presence of friction