A fluid of given density and viscosity is being sheared by two plates separated by height h. The upper plate moves leftwards with given speed U1, and the lower plate moves leftwards with given speed U2. a. Determine the velocity profile u(y) in terms of given variables. b. Determine the equation of the zero-velocity line. c. Determine the shear stress of the fluid everywhere in the flow. d. Determine the magnitudes of the drag forces on the upper and lower plates per unit depth per unit length on each plate