Question

margaret is applying a 65N force to a book as shown. The bo is 859 pages long, has a mass of 2.5kg, is very well writtn, and is not moving. What is the minimum possible vale of the coeficient of static friction between the book and the wall?

Answer 1

To move the book,The Force applied on the book should be greater than the frictional force between the book and wall.

we can get the minimum possible vale of the coeficient of static friction between the book and the wall ,when Force applied is equal to the frictional force.

Here the forces acting on the book are

a) force of gravity = mg

b)Normal force N

c)Force applied = 65N

Normal force = force of gravity (W) = mg = 2.5*9.8 = 24.5N

Frictional force =Force applied

  μ(Normal) = μ(24.5) = 65N

μ = 2.65