Friction is a necessary evil explain in 100 to 150 words
Answers
Answer:
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Explanation:
friction is a non conservative force which always opposes the motion of a body over the other. it dissipates energy into non recoverable forms like heat and noise. the excessive heat produced in machines due to friction may cause damage. friction also causes wear and tear of machinery parts which are in mutual contact. a part of fuel is consumed in machines , engines and vehicles is spent in over coming friction. in this way friction is evil. but on the other hand friction is necessary in our day to day life. if friction was totally absent we could not walk on road and vehicals could not run on ground. if some how vehicles were set in motion they could not be stopped because the breaks would not function. adhesives would not be able to work. nail could not be inserted in walls. we can say that life as it is were not possible. hence we can conclude that friction is necessary evil.