flyerdave

Thanks to everyone for their input. It has been most helpful. I can now go ahead and do some experiments. Sorry I can not say more but need to keep my project under wraps for the time being.

thanks for the reply. So, what happens when I force one of the containers lower in the water using weights will the equilibrium change? The two containers are connected at the top by sealed tubes, so no outside air can get in. If you can envisage two cylinders with a connecting tube at the top and one opening on each cylinder on the base to let water in or out in a tank of water.

I have two identical containers with vents at the bottom of each container, a tube connecting them at the top and each container filled half way with water, both are located in a larger tank of water. Question is: - If i press down on one of the containers forcing more water into the bottom of the container, will the air transfer to the other container via the connecting tube and force out the water in the second container?