A little boy pushes a 12 kg box of library books with a constant velocity along the sidewalk by applying a horizontal force of 96N. calculate the weight, normal force, frictional force and coefficient of friction between the box and the sidewalk

The wieght of the box = 12 kg * 9.81 m/s^2 = 117.72 N

Which Is also equal to the normal force n.

The frictional force Ff can be solve using the equation:

Fnet = F - Ff

96 N = 117.72 N - Ff

Ff = 21.72 N

The coefficent of friction u can be be solve using the formula:

Ff = nu

U = Ff / n = 21.72 N / 117.72 N = 0.1845