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Question

What impact would decreasing irregularities on two surfaces rubbing each other have on the frictional force between them?


A

It does not have any influence

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B

It increases friction

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C

It decreases friction

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D

Cannot be determined

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Solution

The correct option is C

It decreases friction


Irregularities on both the surfaces lock into each other. The force applied would depend on the number of these irregularities and hence friction decreases when irregularities decrease.


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