1.) A 300-Ib box is held at rest on a smooth plane by a force P inclined at an angle 0 with the plane as shown in figure below. If 19:45" determine the value of P and the normal pressure N exerted by the plane. at 2.) If the value of P in the above figure is 180-lb, determine the angle 6 at which it must be inclined with the smooth plane to hold 300-lb box in equilibrium