why friction is called as necessary evil ??
Hrishabh333:
Because Without Friction we cant do any single work such as Walking Talking
how talking ??
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Is is a general misconception that friction always opposes motion between two bodies in contact ,but actually it opposes relative motion between two bodies in contact .In many cases friction is found as the cause of motion .without friction it is impossible to imagine this world.Friction is evil in mechanical machines causing wear and tear of parts.Friction causes wear and tear of tyre but in turn is impossible to rotate tyre…and many more.
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Because friction has pros and cons. It is necessary in life, for eg- due to friction we are able to sit, walk around. If friction is more, it may damage things.
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