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Question

You will find it hard to drag a mat if


A

a feather is placed on it.

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B

a person is sitting on it.

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C

it is small in size.

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D

the floor is smooth marble.

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Solution

The correct option is B

a person is sitting on it.


When a person is sitting on the mat, the total mass increases significantly and the normal force also increases. The force of friction increases as the two surfaces in contact are pressed harder, causing more interlocking between the irregularities.


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