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Write about some lines on the topic of friction is a good evil

Posted by Soni Sharma 7 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 7 years ago

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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CBSE > Class 08 > Science