a boy press horizontally a book against the front wall such that book

1.	a boy press horizontally a book against the front wall such that book does not slide down . the force of friction between wall and book is
Answer» Answer: $f=\mu mg$ . Explanation: Force of FRICTION is the force which opposes the MOTION of the object. It always acts in the OPPOSITE direction of the motion. When a book is press horizontally against the front wall, the force of friction is $f=\mu \times R$ ..................(1) Where R= Normal force of the book which is reaction of book exerted by the weight of the book. R=mg.............(2) where m=mass of the book, g=acceleration due to gravity using (1) and (2) we get So,force of friction is, $f=\mu mg$ .

a boy press horizontally a book against the front wall such that book does not slide down . the force of friction between wall and book is

Answer»

Answer:

$f=\mu mg$ .

Explanation:

Force of FRICTION is the force which opposes the MOTION of the object.

It always acts in the OPPOSITE direction of the motion.

When a book is press horizontally against the front wall, the force of friction is

$f=\mu \times R$ ..................(1)

Where R= Normal force of the book which is reaction of book exerted by the weight of the book.

R=mg.............(2)

where m=mass of the book, g=acceleration due to gravity

using (1) and (2) we get

So,force of friction is,

$f=\mu mg$ .

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