Question regarding Bouyancy in Water

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    Bouyancy Water
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SUMMARY

The discussion centers on buoyancy principles in water, specifically comparing a helium-filled container to a vacuum-filled container. It concludes that the vacuum container, being slightly lighter than the helium container, will rise faster when submerged in water. The conversation highlights the concept that a vacuum is the optimal filling for an airship due to its minimal weight.

PREREQUISITES
  • Understanding of Archimedes' principle
  • Basic knowledge of buoyancy and density
  • Familiarity with the properties of gases, specifically helium
  • Concept of vacuum and its physical implications
NEXT STEPS
  • Research Archimedes' principle in-depth
  • Explore the properties of helium and its applications in buoyancy
  • Study the design and engineering of vacuum-sealed containers
  • Investigate the principles of airship design and buoyancy optimization
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Students of physics, engineers in aeronautics, and anyone interested in the principles of buoyancy and airship technology.

Ralith
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This has been bugging me for a bit. Take two, identical, rigid containers. Fill one with helium at the level in say... a balloon? Then take the other one, and suck all the air out. Take them to the bottom of a container of water- Which will go up quicker?
 
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Assuming the vacuum one doesn't crush - it will weigh slightly less than the helium one and so rise faster.
If you could make the envolope strong enough, 'nothing' is the best thing to fill an airship with.
 
Thanks. Thought so, but wasn't sure.
 

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