Question

A balloon with hydrogen in it rises up but a balloon with air comes down ? Why?

Answer 1

because hydrogen gas is lighter than any other kinds of gas/air..

Answer 2

Hi,

Here is your answer,

The density of hydrogen is less than air. So, the buoyant force on the balloon will be more than its weight in case of the hydrogen. So, in this case the balloon rises up. In case of air, the weight of balloon is more than the buoyant force acting on it, so balloon will come down.


Hope it helps you!