Siphon Flow in Tanks: Will Water Go Up Hill?

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SUMMARY

The discussion centers on the principles of siphoning water between two tanks of different elevations. It is established that water will not flow from a higher tank to a lower tank through a siphon if the water level in the larger tank is higher than that in the smaller tank. Instead, the water will flow to equalize the levels in both tanks. The conversation also touches on the misconception of creating a perpetual motion machine through this setup, which is not feasible according to the laws of physics.

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If we have 2 Tanks connected with a siphon but the water in bigger tank is higher than the water in smaller tank, but the siphon goes from smaller tank over to the big tank and ends up at lower elevation than it started.

Will the water flow in big tank like in the picture.
 

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Domagoj said:
If we have 2 Tanks connected with a siphon but the water in bigger tank is higher than the water in smaller tank, but the siphon goes from smaller tank over to the big tank and ends up at lower elevation than it started.

Will the water flow in big tank like in the picture.
No. The water will flow in the pipe to equalize the heights of the two water levels in the two tanks.

Why do you keep asking these questions? https://www.physicsforums.com/threads/two-tank-system.858985/#post-5391589

What are you trying to do? It looks like you are trying to create a Perpetual Motion Machine, or an Over-Unity Mechanism. Such topics are not permitted here on the PF.
 
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Domagoj said:
If we have 2 Tanks connected with a siphon but the water in bigger tank is higher than the water in smaller tank, but the siphon goes from smaller tank over to the big tank and ends up at lower elevation than it started.

Will the water flow in big tank like in the picture.
Try it! Use two jars/basins/buckets/whatever and some plastic tubing or a few bendable drinking straws securely taped together to have air-tight joins. Let us know what you find out! :smile:

You could even be the first experimenter to discover the amazing Domagoj Syphon! :wink:
 
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