Repeat Prob. 1–67E by replacing air with oil with a specific gravity of 0.69.
The absolute pressure in the pipeline.
Answer to Problem 68P
The absolute pressure in the pipeline is
Explanation of Solution
Determine the density of mercury.
Here, the specific gravity of the mercury is
Determine the density of oil.
Here, the specific gravity of the oil is
Write the expression of pressure in a double U-tube manometer with one arms open to the atmosphere.
Here, the absolute pressure in the pipeline is
Conclusion:
From the Table A-3E (a) “Properties of common liquids, solids, and foods” to obtain the value for density of water as
Substitute
Substitute
Substitute
Thus, the absolute pressure in the pipeline is
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Engineering Mechanics: Statics
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