The viscosity of a fluid is to be measured by a viscometer constructed of two 75-cm-long concentric cylinders. The outer diameter of the inner cylinder is 15 cm, and the

gap between the two cylinder sis 1 mm. The inner cylinder is rotated at 300 rpm, and the torque is measured to be 0.8 N-m.Determine the viscosity of the fluid. Look at the book for viscometer (self-study) Assumptions: 1 The inner cylinder is completely submerged in oil. 2 The viscous effects on the two ends of the inner cylinder are negligible. 3 The fluid is Newtonian.