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Air's Weight


totocyn

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you can mesure airs mass, but you will have great difficultly measuring its weigth, as gravity isnt powerful enougth on earth to stop it diffusing significantly in three dimentions. you can however measure the pressure it applies, which i believe is around 10^5 Pa

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Seems to be correct' date=' I did some fast calculations and it could be right due to its

big ground area and very small top.

http://www.tour-eiffel.fr/teiffel/uk/documentation/structure/page/chiffres.html[/quote']

 

So a square container would be roughly 125 m x 125 m x 300 m = 4687500 m3, and air has a density of about 1.25 kg/m3, so that's 5.86 x 106kg. The tower's weight is given as 7300 tons, or ~6.6 x 106kg.

 

And I didn't even insist on a triangular-pyramid-shaped glass, so that I could put the tower in upside-down, which gains about a factor of three in excluded air. Nobody said the jar had to be a cylinder :)

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you can mesure airs mass, but you will have great difficultly measuring its weigth, as gravity isnt powerful enougth on earth to stop it diffusing significantly in three dimentions. you can however measure the pressure it applies, which i believe is around 10^5 Pa

 

Once you have the mass the weight is trivial. W = mg

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So a square container would be roughly 125 m x 125 m x 300 m = 4687500 m3' date=' and air has a density of about 1.25 kg/m[sup']3[/sup], so that's 5.86 x 106kg. The tower's weight is given as 7300 tons, or ~6.6 x 106kg.

 

And I didn't even insist on a triangular-pyramid-shaped glass, so that I could put the tower in upside-down, which gains about a factor of three in excluded air. Nobody said the jar had to be a cylinder :)

That is actually suprisingly close - although like you said the jar doesn't have to be a cylinder.
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