QUESTION TWO A cylinder 220 mm in diameter and 3 m long is concentric with a pipe of 210 mm inside
diameter. Between cylinder and pipe there is an oil film. What force is required to move
the cylinder along the pipe at a constant velocity of 2 m/s? The kinematic viscosity of the
oil is 5.6 x 104 m²/s with density of 880 kg/m"".
[11 mks]
pipe
oil film
Cylinder
110 mm
105 mm

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