The final component of a conveyor system receives sand at a rate of 100 kg/s at A and discharges…

The final component of a conveyor system receives sand at a rate of 100 kg/s at A and discharges it at B. The sand is moving horizontally at A and B with a velocity of magnitude vA = vB = 4.5 m/s. Knowing that the combined weight of the component and of the sand it supports is W = 4 kN, determine the reactions at C and D.