Newtons from Bouyancy underwater comparing helium, oxygen, and hydrogen

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SUMMARY

This discussion focuses on calculating the buoyancy forces exerted by helium, oxygen, and hydrogen underwater. The key factors include the densities of these gases relative to water and each other. The inquiry specifically seeks to quantify the increase in Newtons of buoyancy when using helium instead of oxygen and hydrogen instead of oxygen. Understanding the densities of these gases under pressure is crucial for accurate calculations.

PREREQUISITES
  • Understanding of buoyancy principles and Archimedes' principle
  • Knowledge of gas densities, specifically for helium, oxygen, and hydrogen
  • Familiarity with pressure effects on gas density
  • Basic mathematical skills for calculating force and percentage increase
NEXT STEPS
  • Research the densities of helium, oxygen, and hydrogen at various pressures
  • Learn about Archimedes' principle and its application in fluid mechanics
  • Explore calculations for buoyancy force using the formula: Buoyancy = Volume displaced x Density of fluid x Gravitational acceleration
  • Investigate the effects of temperature and pressure on gas density
USEFUL FOR

Engineers, physicists, and hobbyists involved in underwater applications or buoyancy-related projects will benefit from this discussion.

blueshifter
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I have an under water application where I need the maximum amount
of buoyancy with a limit to the volume i can use for a lifting device.
My question is how much more Newtons would be exerted for helium instead of oxygen, or hydrogen instead of oxygen underwater?
What is the percentage increase ?

Thanks in advance
 
Physics news on Phys.org
Welcome to PF. On this site, we try to help people learn to learn, rather than just spoon feeding answers. What have you tried so far in figuring this out? Hint: what are the densities of those gases (relative and under pressure)? What is the density of water?
 

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