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A lubricating oil of viscosity 1 poise and specific gravity 0.9 is pumped through a 30mm diameter pipe. If the pressure drop per meter length of pipe is $20 kN/m^2$ determine:

Subject: Fluid Mechanics 2

Topic: Laminar flow

Difficulty: High

A lubricating oil of viscosity 1 poise and specific gravity 0.9 is pumped through a 30mm diameter pipe. If the pressure drop per meter length of pipe is $20 kN/m^2$, determine:

i) The mass flow rate in kg/min,

ii) The shear stress at the pipe wall,

iii) The Reynolds number of flow and,

iv) The power required per 50 m length of the pipe to maintain the flow.

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