2.3 An oil having a viscosity of 0.0098 kgf second per square metre and a specific gravity of 1.59 flows through a horizontal pipe of 5 centimeter diameter with a pressure drop of 0.06 kgf per square centimeter per meter length of the pipe. Determine (i) the rate of flow in kilograms per minute, (ii) the shear stress at the pipe wall, (iii) the total drag for 100-metre length of the pipe and (iv) the power required for the 100 metre length of the pipe to maintain the flow.

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