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Re: [Phys-L] physics and football

Helium Party balloons are well worth considering.

Thin, lightweight balloons will loose their buoyancy in a few hours but slightly heftier balloons will float for a day or two.
Last time I saw a football bladder it was considerably thicker than a hefty party balloon so I would expect the deflation rate to be insignificant during even a seemingly interminable game.


On Jan 22, 2015, at 8:44 PM, Paul Nord <paul.nord@valpo.edu> wrote:

I wonder how quickly they deflate if you fill them with helium, or some other gas to which the skin will be more permiable.

Paul