Question

If two balloons have same surface area and same volume but one is filled with hydrogen and other one is filled with tungsten hexafluoride. then why the balloon filled with hydrogen flow but ballon tungsten hexafluoride stays on the ground.why?(i am asking because both should move with equal accerleration 'g' as they have equal S.A. and Volume)

Answer 1

The buoyant force only depends on the density of the fluid ρrho in which the object is submerged, the acceleration due to gravity , and the volume of the displaced fluid V.

The surface area does not matter, although is related to the volume of course.

Moreover it's possible to prove that if the density of a fully submerged object (regardless of its shape) is greater than the density of the fluid it's placed in, the object will sink.

Answer 2

Hey Mate!

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Good Question

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Option :↓Choosen below↓

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Helium and hydrogen are lighter than air (hydrogen is even lighter than helium). Hydrogen is not used in balloons because it is explosive. Helium is a special gas called a Noble Gas, which means it doesn't burn so used in filling balloons.

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