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 force on the book by the wall is $?$

F and along the finger but pointing towards the girl

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

μ F

upwards where

μ

is the coefficient of static friction

No worries! We‘ve got your back. Try BYJU‘S free classes today!

mg and upwards

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Equal and opposite to the resultant of F and mg

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B F and along the finger but pointing towards the girl
The force F is applied on the wall by the book. Friction is the resistance to the force applied and acts in the opposite direction. Thus the wall applies a frictional force to the book or the frictional force is pointing towards the girl.
Thus the correct option is A.

Suggest Corrections

Similar questions

Q. A block of mass M is held against a rough vertical wall by pressing it with a finger. If the coefficient of friction between the block and the wall is

μ

and the acceleration due to gravity is g, what is the minimum force required to be applied by the finger to hold the block against the wall?

Q. A girl presses her physics textbook against a rough vertical wall with her hand. The direction of the frictional force on the book exerted by the wall is:

Q. Find minimum normal force to be applied by each hand to hold three identical books in a vertical position. Each book in a vertical position. Each book has mass m and the value of the coefficient of friction between the books as well as between hand the book is

μ

Q. A block of mass

5 k g

is hold against a vertical wall with coefficient of friction

0.4.

then what will be the minimum horizontal force required so that the block does not slip

(g = 10 m / s^{2})

A body of mass M is kept on a rough horizontal surface (friction coefficient = $μ$ ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on A is F, where

Join BYJU'S Learning Program

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 force on the book by the wall is?

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 force on the book by the wall is $?$