Problem: I am pushing a box holding it stationary against a vertical wall. The box weighs 8N and I am pushing with a steady 40N horizontal force (into the wall). The coefficient of static friction between the wall and box is 0.2 and the coefficient of kinetic friction between the wall and box in 0.15. Requirement: List all the forces in action and their magnitude. I know that 40N is one of them (not sure what to call it), the normal force (which should also be 40N?), and gravitational force of 80N. I am confused as to how the two coefficients of friction would affect this problem. Any ideas?