Question

Asked Sep 10, 2019

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The closed tank below is filled with water and is 5 ft long. The pressure gage on the tank reads 7 psi. Determine: (a) the height, h, in the open water column; (b) the gage pressure acting on the bottom tank surface AB, and; (c) the absolute pressure of the air in the top of the tank if the local atmospheric pressure is 14.7 psia. [Answer in units of ft. and psi]

Step 1

Given: height of tank=5ft

Pressure P_{air }=7psi

Local atmospheric pressure P_{o}= 14.7 psi

Step 2

a) Pressure at atmospheric level, P_{atm}=0 as it is open to atmosphere

- To convert psi to lb/ft
^{2 }multiply the value 144 - Specific weight of water = 62.4 pounds per cubic foot,
**lbs**/**ft3**. - From the given figure pressure at air is:

Step 3

b)Pressure at surface ...

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