Question

2. What is the dynamic viscosity of a fluid measured by the rotating-drum viscometer shown below that rotates at 200 rpm and reading 1.5 Nm of torque? The rotating drum is 300 mm india meter and 800 mm long, and the gap between the drum and the stationary wall is 1.2 mm.Give your answer in m Pa-s.

Fig: 1

Fig: 2