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

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 В with a velocity of magnitude υA = υB = 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 С and D.