Question

Explain the force of friction is necessary evil?

Answer 1

friction is said to be a necessary evil because it is useful as well as harmful. friction helps us to walk, write, hold things, lift objects. So it is necessary in our lives. Without friction many essential processes can not be done. On the other hand, it is also unecessary at times. it sometimes results in loss of energy, wear and tear of parts of machinery, due to which it  also damages things. so it is an essential evil.

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Answer 2

friction is nessary for life
because of friction
we are able to walk
brakes work due to friction
we are able to write due to friction
so friction is a nessary evil