Balloon Gravitational Force
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BalloonsWired
•The Physics of the Macy’s Thanksgiving Day Parade Balloons
59% Informative
Parade balloons seem to cheat physics in order to move through the sky.
It is because of physics that they are able to float.
There is indeed a force pulling down on these massive balloons.
This gravitational force is proportional to the mass of the object.
Even with so great a downward force, the balloons stay aloft.
Bigger balloons might make it easier to float but it adds other issues.
Out-of-control balloons are bad, but these balloons still have mass.
If a balloon uses 12,000 cubic feet of helium, that is about 55 kilograms of mass.
When a 200-kilogram balloon crashes into a lamp post, the lamp post can easily topple over.
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