2. The viscosity of a fluid is to be measured by an viscometer constructed of two 75–cm–long concentric cylinders. The outer dia
meter of the inner cylinder is 15 cm, and the gap between the two cylinders is 0.12 cm. The inner cylinder is rotated at 200 rpm, and the torque is measured to be 0.8 N-m. Determine the viscosity of the fluid.
1 answer:
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Explanation:
It is known that relation between torque and angular acceleration is as follows.
and, I =
So,
= 4
So,
= 1
as
=
Hence,
Thus, we can conclude that the new rotation is times that of the first rotation rate.