Can Helium-Filled Surgical Hose Stand Vertically?

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Filling a 4-5 foot piece of surgical hose with helium is unlikely to result in it standing vertically due to the thick walls of the hose, which may offset the buoyancy of the helium. To determine if it would float or stand, one can calculate the weight of the hose filled with helium compared to the weight of the same volume of air. If the hose weighs less than the helium-filled volume, it will float; if it weighs slightly more, it may stand upright; if it weighs considerably more, it will remain on the ground. The discussion highlights that unlike a balloon, which can regulate its position with a string, the hose lacks this feature, making it less likely to achieve a stable vertical position.
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If I filled a 4-5 foot piece of surgical hose with helium, would it stand vertically? How long would it remain assuming both ends were sealed? Would some other flexible material work better? A balloon on a string would not work for my purpose. Thank You
 
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I doubt it, since surgical hose has a rather thick wall. The weight of the hose would probably offset the buoyancy of the helium.
 
Well, you can just do the maths and discover by yourself. You just need to know how much the hose weights, and its volume(total and internal, although just internal will do). Then just calculate how much the hose filled with helium weights, and how much the same volume or air weights. If the hose weights less, it'll float, if it weights just slightly more it's very likely stand up, if it weights considerably more it'll just remain on the ground.
 
Munfred said:
if it weights just slightly more

if it weights considerably more

Where is the border between slightly and considerably?
 
Borek said:
Where is the border between slightly and considerably?
Well now that's quite a good question, but 'slightly' would be like when you have your helium balloon with the string on it and it floats with some string on the ground. in this case the balloon + string weights is just slightly more than the same volume in air. If it simply can't get off the ground then it weights considerably more. :rolleyes:
 
With the balloon, the string acts as a regulator. The balloon rises until it's weight plus the amount of string not resting on the ground equals the weight of air being displaced.

If the balloon rises higher, more string weight is added and it sinks back. If it sinks too low, it has less weight from the string and will rise back up.

The tubing does not have such a regulator, so that is a problem. I.e., it will either float to the ceiling, or fall over. You can't get it exactly right.
 
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