A 3.2 Kg box is pressed up against a wall by a person’s arm that makes a 35-degree angle with the wall. The box slides down the wall with a uniform speed. There is a coefficient of friction of 0.45 between the box and the wall.

Question

A. What is the magnitude the force that the person is using to push on the box?
B. If the box is sliding up the wall at a uniform speed, what is the magnitude of the force the person is using to push on the box.