A viscometer consists of two concentric cylinders 102 cm, Ask an Expert

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A viscometer consists of two concentric cylinders, 10.2 cm and 10.6 cm in diameter. A particular liquid fills the space between them to a depth of 12.0 cm. The outer cylinder is fixed, and a torque of 0.024 m?N keeps the inner cylinder turning at a steady rotational speed of 62 rev/min. For this particular geometry, the area, A, is the average surface area of the two cylinders [the inner (rotating) and outside (fixed) cylinder]. What is the viscosity of the liquid?

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