A cylindrical oil-storage tank (D = 120 ft) has a vent to the atmosphere to allow air to move in or out as the tank is filled or emptied. This vent is plugged by snow in a blizzard while the oil is being pumped out of the tank, and the gauge pressure in the tank falls to -1 psig ( = 1 psi vacuum). What is the net force on the roof of the tank?
Find the net force on the roof of the tank. Pressure question?
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