Helium balloon in water and air

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SUMMARY

To calculate the time it takes for a helium balloon with a volume of 3 liters to ascend from a depth of 10 meters to an altitude of 100 meters, one must consider the buoyancy force, drag force, and the density of the surrounding fluids. The ascent rate will differ significantly if the balloon is filled with hydrogen instead of helium due to the differences in buoyancy and density. The calculations involve applying Archimedes' principle and the drag equation to determine the net force acting on the balloon during its ascent.

PREREQUISITES
  • Understanding of Archimedes' principle
  • Familiarity with buoyancy and density concepts
  • Knowledge of the drag equation
  • Basic physics of gases (helium vs. hydrogen)
NEXT STEPS
  • Calculate the buoyant force acting on a helium balloon at various depths
  • Explore the drag equation and its application to buoyant objects
  • Compare the ascent rates of helium and hydrogen balloons
  • Investigate the effects of water density on buoyancy calculations
USEFUL FOR

Students studying physics, educators teaching buoyancy concepts, and hobbyists interested in balloon flight dynamics.

greset
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If I were to let go of a Helium balloon with a volume of 3 liter at a depth of 10 meters, how do i calculate te time it will take the balloon to reach an altitude of a 100 meters in the air? And what changes if its not helium but hydrogen for instance?

hope anyone can help me with this
 
Physics news on Phys.org
Welcome to PF greset,

This smells like homework to me... :wink:

What have you attempted thus far?
 

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