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A girl holds a book of mass m against a ...

A girl holds a book of mass `m` against a vertical wall with a horizontal force `F` using her finger so that the book does not move. The frictional froce on the book by the wall is :

A

`A` and along the finger but pointing towards the girl

B

`mu F` upwards where `mu` is the coefficeint of static friction

C

`mg` and upwards

D

equal and opposite to the resultant of `F` and `mg`

Text Solution

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The correct Answer is:
C
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RESONANCE-DAILY PRACTICE PROBLEM-DPP No.15
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