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A cylindrical rod of radius R moves axially with velocity v z = v o along the axis of a cylindrical cavity of radius R
A cylindrical rod of radius moves axially with velocity along the axis of a cylindrical cavity of radius as seen in the figure. The pressure at both ends of the cavity is the same, so that the fluid moves through the annular region solelv hecause of the rod motion.
a Find the velocity distribution in the narrow annular region.
b Find the mass rate of flow through the annular region.
c Obtain the viscous force acting on the rod over the length
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