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Question

"Friction is a force which opposes the relative motion between two objects”.


A

True

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B

False

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Solution

The correct option is A

True


Friction acts to oppose relative motion between surfaces of two objects.

For the simple example of a book resting on a flat table, the frictional force is zero. There is no force trying to move the book across the table, so there is no need for a frictional force because there is nothing for the frictional force to oppose. However, if we try to slide the book across the table, friction comes in to play.


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