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Okay, thanks a lot!

Hmm, I can understand all that, but there's one problem that keeps bothering me. If we have a perfectly shaped cone at the bottom of a glass, with no water beneath it, which pressure will lift it up (assuming its density is less than the density of water)?

Hello. I have a question or two about buoyancy, in water specifically. What causes buoyancy, if there is something more than the difference of pressures above and beneath an object? What would happen if I put a very thin object in water, so that the difference in pressures would be extremely...