Question

A downward force of 18-N is applied to a book sitting on a table. The table where the book is placed provides a static friction with a maximum value of 20-N and Kinetic friction of roughly 12-N. If the book has a mass of 3.0-kg, what is the acceleration of the book?

Answer 1

Given :

Force applied on book, F = 18 N.

Kinetic friction, $K_f = 12\ N$.

Mass of book, M = 3 kg.

To Find :

The acceleration of book.

Solution :

Equation of force applied on book is :

$F_{net} = F - K_f\\\\ma= 18 - 12 \\\\a=\dfrac{6}{3}\ m/s^2\\\\a = 2\ m/s^2$

Therefore, acceleration of book is 2 m/s².

Hence, this is the required solution.