How much air pressure is required?

[AndreBMW]

Given the following situation:

Given that A is air tight how would one go about working out the air pressure required to achieve:

Any assistance would be appreciated.

 

[A Gene]

http://www.engineeringtoolbox.com/hydraulic-force-calculator-d_1369.html

There's a calculator at that site.

edit: I just noticed your fig. looks like a manometer.

https://www.dwyer-inst.com/Products/ManometerIntroduction.cfm

 

[russ_watters]

Google "hydrostatic pressure".

You don't need force for this, just pressure.

 

[AndreBMW]

Google "hydrostatic pressure".

You don't need force for this, just pressure.

Thanks Russ. I think this is the key. My gut says that if you increase air pressure to equal water pressure at a certain depth that this will displace water to that depth. Is that correct?

 

[russ_watters]

Correct.

 

[AndreBMW]

Thanks, much appreciated.