Q.1 A hydraulic circular rod having a 100mm diameter and 2m long is pulled by a force of 200 N. It moves with a constant velocity within a circular hollow tube of 101mm internal diameter. The clearance of 0.5mm between the rod and the tube is filled with oil of specific gravity 0.8 and kinematic viscosity 400 mm2/s as shown in the figure below. Determine the velocity of the rod in units of m/s.
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