# Helium question?

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

Redbelly98
Staff Emeritus
Homework Helper
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.

Borek
Mentor
if it weights just slightly more

if it weights considerably more

Where is the border between slightly and considerably?

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 cant get off the ground then it weights considerably more.

Redbelly98
Staff Emeritus