Question

A book of weight 20 N is pressed between two hands and each hand exerts a force of 40 N. If the book just starts to slide down. Coefficient of friction is? a) 0.25 b) 0.2 c)0.5 d) 0.1 ANSWER IT STEP BY STEP...I WILL MARK YOU AS BRAINLIEST

Answer 1

Answer:

Coefficient of friction is 0.25.    

Explanation:

Given : A book of weight 20 N is pressed between two hands and each hand exerts 40 N force. If book just starts to slide down.

To find : Coefficient of friction ?

Solution :

A book weight = 20

The frictional force is

Where,  is frictional force

 is coefficient of friction

N=40+40=80N is the normal force (two hand pressure)

Substitute the value in the formula,

Therefore, Coefficient of friction is 0.25.

Answer 2

Answer:

Here is your answer

Explanation:

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