Friction is both evil and good give some examples
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Explanation:
Friction enables us to walk on the ground .it is difficult to walk on a polished floor or oily floor
Stopping of moving object is possible only due to friction
Match stick and sand paper works on the principle of friction
Evil
Friction causes wear and tear of machine parts and reduces their life time
It results in production of heat and cause damage to machinery and make machine less effective
Energy has to be spent in overcoming friction
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