Quiz - Physics - Fill a Container at 40 metres/132 feet

Approximately how much air must be pumped down from the surface to fill a 40 litre container if the

  • a. 160 litres

  • b. 100 litres

  • c. 40 litres

  • d. 200 litres


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A 20 liter canister
20 liter? Huh. Up here, 25 liter plastic cans are found in at least every second hardware store. Apart from their legit uses, they're quite popular as fermentation vessels for the moonshiners.

I've personally cut the top of two of those, to make a stool for ice fishing. Works like a charm.
 
The problem was simply to get proper bags, which simple were not available (in a small island in the middle of the Mediterranean with no shop of technical equipment). At the LDS, there were only two 50-liters bags, and the dump valve was available only for one third, very large 500-liters bag...
And it revealed to be under-dimensioned for that bag.
Instead there were a lot of plastic canisters of any shape and size, as they mostly produce wine...
The objects to be recovered were all almost perfectly identical (you know, Romans had very precise standards). A 20 liter canister was just perfect... I cannot say more, sorry!
OK, if you are talking about special circumstances and known objects and limited tools....I understand. I guess I thought you were talking in general about lifting objects.
 
https://www.shearwater.com/products/teric/

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