3. Viscosity measurement. The viscosity of a fluid is measured by a viscometer constructed of two 75-cm-long concentric cylinders. The outer diameter of the inner cylinder is 15cm, and the gap between cylinders is 0.12cm. The inner cylinder is rotated at 200 rpm, and the torque is measured at 0.8 Nm. Estimate the viscosity 200 rpm 0.12 cm Fluid 1 Stationary cylinder