Using Fig. 3.1-1, the lower plate is being pulled at a relative velocity of 0.40 m/s...

   

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Using Fig. 3.1-1, the lower plate is being pulled at a relative velocity of 0.40 m/s greater than the top plate. The fluid used is water at 24°C. a. How far apart should the two plates be placed so that the shear stress T is 0.30 N/m²? Also, calculate the shear rate. b. If oil with a viscosity of 2.0 × 10-² Pa · s is used instead at the same plate spacing and velocity as in part (a), what are the new shear stress and the shear rate? T Ay F, force Z Figure 3.1-1. Fluid shear between two parallel plates. -AV₂ Using Fig. 3.1-1, the lower plate is being pulled at a relative velocity of 0.40 m/s greater than the top plate. The fluid used is water at 24°C. a. How far apart should the two plates be placed so that the shear stress T is 0.30 N/m²? Also, calculate the shear rate. b. If oil with a viscosity of 2.0 × 10-² Pa · s is used instead at the same plate spacing and velocity as in part (a), what are the new shear stress and the shear rate? T Ay F, force Z Figure 3.1-1. Fluid shear between two parallel plates. -AV₂