Question: A circular disk of diameter d = 4 0 cm is rotated in a liquid of high viscosity at distance h = 0 . 0

A circular disk of diameter d =40cm is rotated in a liquid of high viscosity at distance h=0.005m from a fixed surface. The shaft rotates with an angular velocity 175rpm of the of the disk if the shaft records a torque of 35 N-m. Find the viscosity of the liquid

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