Why do helium-filled balloons float in air?

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asked Dec 10, 2018 171k views

2 Answers

Pratik Bhiyani · Answer 1 · 2018-12-13T15:59:34+0000

A helium balloon displaces the amount of air. The weight of the helium in the balloon + the balloon fabric = lighter than the air that it displaces. Helium is lighter than air, so therefore, if it's in a balloon, the balloon will float.

Nerissa · Answer 2 · 2018-12-16T11:05:04+0000

The helium balloon displaces an amount of air. As long as the weight of the helium plus the balloon fabric is lighter than the air it displaces, the balloon will float in the air. It turns out helium is a lot lighter than air.

Why do helium-filled balloons float in air?

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