What is friction? Why is it necessary?
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The force that opposes the motion of any object is called friction.It is necessary as it is both useful and harmful for us
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Explanation:
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. ... Without friction many essential processes can not be done. On the other hand, it is also unecessary at times.
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