Physics, asked by viniee6023, 4 months ago

State weather friction is useful aur not usefull sharping a pencil

Answers

Answered by Anonymous

Answer:

friction is useful

Explanation:

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Answered by Anonymous

Explanation:

there is a big confusion please help me :- in which of the following cases friction is useful : 1) sharpening a pencil 2) gears rubbing against ...

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