Problem 2 130 kg of uniform spherical particles with a diameter of 60 m and particle density 1500 kg/m are fluidized by water (density 1000 kg/m, viscosity 0.001 Pas.) in a circular bed of cross-sectional area 0.2 m. The single particle terminal velocity of the particles is 0.98 mm/s and the voidage at incipient fluidization is known to be 0.47. (a) Calculate the bed height at incipient fluidization. (b) Calculate the pressure drop and incipient fluidization velocity. Problem 3. Compute the drag force on a 6 ft long cylinder with a cross section of 4 in diameter when the cylinder is moving at 4.0 ft/s through water at 400F. The long axis of the cylinder is placed perpendicular to the flow.