(P6.8)-A conical tube of length 2.0 m is fixed vertically with its smaller end upwards. the velocity of flow at the smaller end is 5m/s while at the lower end it is 2m/s. the pressure head at the smaller end is 2.5 m of liquid. the loss of head in the tube is 0.35(V1-V2)^2/2g, where V1 is the velocity at the smaller end and V2 at the lower end respectively. determine the pressure head at the lower end.
Flow takes place in the downward direction.
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