Question

friction force is know as a necessary evil . tell in 50 words​

Answer 1

Explanation:

friction is said to be a necessary evil because it is useful as well as harmful. ... 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.

Answer 2

Explanation:

EVIL :

DUE TO FRICTION THERE IS LOSS OF ENERGY

FRICTION CAUSES WEAR AND TEAR OF TYRES

NECCESITY:

FRICTION HELPS US TO WALK , SWIM, RUN , DANCE ETC ETC

FRICTION HELPS IN WRITING