Can a Liquid Column Exist Above a Hole When Pressure Drops from 2Patm to Patm?

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A liquid column can exist above a hole when pressure drops from 2Patm to Patm. As the volume above the liquid increases, the pressure can equal Patm while still maintaining a water column above the hole. When the liquid drains, the pressure in the space above the water decreases below Patm. At a certain height above the hole, the combined pressure from the water column and the space above can balance out to Patm. This scenario demonstrates the dynamics of pressure and liquid levels in a confined space.
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Homework Statement


This question is a product of my own mind-

Refer Figure.
Suppose the value of P= 2Patm, can 2Patm fall to Patm before the liquid levels with the hole-level? In other words, can there be a liquid column above the hole?
 

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Abdul Quadeer said:

Homework Statement


This question is a product of my own mind-

Refer Figure.
Suppose the value of P= 2Patm, can 2Patm fall to Patm before the liquid levels with the hole-level? In other words, can there be a liquid column above the hole?

It is possible. When the volume of the space above the liquid doubles, pressure becomes Patm.. Still there is a water column above the hole. As the water drains, pressure above the water decreases below Patm. At one level above the hole, the sum of the pressure due to the water level above the hole and pressure in the space above the water may become equal to Patm.
 
Thanks!
 

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