Can the water from Tank 1 enter Tank 2?
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This post was last edited by sxf1028102800 on 2018-3-16 09:09. The bottom of Tank 1 is 2 meters away from the top of Tank 2; in other words, the height difference between them is 2 meters. There is 10 meters of water in Tank 2. Can the water in Tank 1 flow into the bottom of Tank 2? (Vessels 1 and 2 are both at atmospheric pressure, they are open and in communication with the atmosphere). Thank you, extra points. As shown in the figure
Tank 2 contains 10 meters of water, so the pressure at its bottom is approximately 1 kilogram. Does that mean Tank 1 needs a pressure greater than 1 kilogram in order to push water into it?
It’s not necessary, because Unit 1 is 2 meters higher than Unit 2; it’s sufficient for the pipe running from Unit 1 to the bottom of Unit 2 to be filled with water, which will create enough pressure difference. Additionally, a siphon effect will occur as well.
Take a look at the principle of the U-tube manometer; the last two horizontal levels will be at the same height
Yes, as long as it’s higher than tank 2#, it can flow in
Of course you can go in. At 10 meters depth, the pressure is only 0.1 Mpa. Since Tank No. 1 is at such a high level, as long as there is enough water in Tank No. 1, water should be able to flow in; it’s only possible that there is pressure in the gas phase of Tank No. 2
I should go in now； The pressure generated by the height at the bottom of Tank 1 is much greater than that produced by 10 meters of water in Tank 2; both are open tanks and are subject to the same atmospheric pressure ； (That is, the principle of a U-tube)