Hydrostatic Pressure Explained: Why Does Water Flow & Stop?

AI Thread Summary
When a tube is submerged in a bucket of water and air is blown into one end, water flows out due to the pressure difference created. This pressure difference causes the water to move, similar to how a spring reacts when compressed and released. When the tube is raised, the water stops flowing because the hydrostatic pressure equalizes, preventing further movement. The water inside the tube seeks to maintain the same level as the water in the bucket, demonstrating the principles of hydrostatic pressure. Understanding these concepts clarifies why water flows and stops in this scenario.
sameeralord
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I don't understand.

If there is a bucket of water and you put a tube inside the bucket and blow at one end and then release water flows out of the tube. Why does this happen. Also when you raise this tube water stops. Why? This is not homework or anything. :smile:
 
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sameeralord said:
I don't understand.

If there is a bucket of water and you put a tube inside the bucket and blow at one end and then release water flows out of the tube. Why does this happen. Also when you raise this tube water stops. Why? This is not homework or anything. :smile:

Because the water is acting like a spring. Push on one end of a spring , when you release it it springs back.

It's the water inside the tube tying to stay at the same level as that in the bucket - in the same way a spring will try to keep it's end at one position before you pushed on it.
 

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