Gears A and B are attached to a shaft supported by bearings at C and D. The diameters of gears A and B are 6 in. and 3 in., respectively, and the tangential and radial forces acting on the gears are as shown. Knowing that the system rotates at a constant rate, determine the reactions at C and D. Assume that the bearing at C does not exert any axial force, and neglect the weights of the gears and the shaft.