SUBSIM Radio Room Forums - help me win a bet regarding subs/water pressure physics

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Whoever chose the second option is gonna lose fifty bucks.

:sunny:

So?
Who won the bet? :D

Quote:

Originally Posted by TarJak

Nice one Pen:up: I had a chat to a guy that manufactures hyperbaric chambers and therefore knows just about all there is to know about pressure seals and he said almost exactly the same thing.

His only caveat was what pressure the "gas" was in the chambers. Even a small amount of air pressure (say at sea level pressure), will increase the amount of pressure needed by the water to make the next seal fail. So (hope I get this right), if the air pressure inside chambers 2 and 3 is ~14psi, then the pressure needs to be 999psi+14psi to make the seal fail.

He said though given that this wasn't specified in the problem description that it may not apply to the problem at hand. He also said that different gas mixtures can also have different effects but that the "gas" pressure is the key. If it was a vacuum then failure would occur.

Physics and Chemistry are about two of the only things I am good at.

I did wonder about internal air pressure but since nothig was mentioned about the pressure inside the cabins I just left it out as a non-factor. Talking in simple terms though, the thing is junk the second you put it in the water. LOL

Waste of good metal.:rotfl:

I lost the bet and paid my dues. I consider myself a true scientist (albeit an untrained one) so I'm always willing to start with a theory and seek out information that can prove it either way, and accept the conclusion and change my theories to fit the evidence and the proof like a real man. :) While it seems like the air pressure is the only wildcard factor here, and the size of the structure may have an effect, for the most part, my myth is busted.

I realize that Pascal's Law is the key here really - "Pascal's law or Pascal's principle states that for all points at the same absolute height in a connected body of an incompressible fluid at rest, the fluid pressure is the same, even if additional pressure is applied on the fluid at some place."

Quote:

Originally Posted by Penelope_Grey

Waste of good metal.:rotfl:

Unless you want to anchor a bouy with it. Tho it would be cheaper and quicker to fill the lot with concrete first.:rotfl: