To prevent a box from sliding down an inclined plane, student A pushes on the box in the direction parallel to the incline, just hard enough to hold the box stationary. In an identical situation student B pushes on the box horizontally. Regard as known the mass m of the box, the coefficient of static friction -s between box and incline, and the inclination angle θ. (a) Determine the force A has to exert. (b) Determine the force B has to exert. (c) If m = 2.00 kg, θ = 25.0°, and μs = 0.160, who has the easier job? (d) What if μs = 0.380? Whose job is easier?