I did my Australian duty last night and arranged to wake up with a massive hangover this morning. i just opened my esky and two VB cans were floating in it. It's are rare occasion this would even happen, but I was sure real beer didn't float but the fake stuff, lite beer, etc. did.
Am I wrong or are we being dudded again?
Should Real Beer Cans Float?
GOFYS on 26/01/2016 - 16:48
Last edited 26/01/2016 - 17:56 by 1 other user
Last edited 26/01/2016 - 17:56 by 1 other user
Comments
In order to float, an object, or an object plus the air inside that object, must be less dense than water. So, for a can (or keg) of liquid to float, it must be empty enough so that the weight of the can / container plus the weight of the liquid plus the weight of air inside is less than weight of liquid with the same volume as the keg (measured on the outside).
Basically
If =sum of
weight of can
weight of beer
weight of gas
)< (Is less than)
weight of liquid displaced by the can
= floating can
Yep full VB cans will definately float in water. Better drink them before they float away:)
If beer is like eggs, it may indicate that the beer is no longer fresh.
If it was floating on top then I'm afraid you've been scammed. It's clearly American beer in disguise. No Australian beer is that close to water.
Hmmm. If the alcohol content is your primary method of determining what is 'good beer', then you should know that alcohol is lighter than water.
e.g we can expect that a 350ml amount of ethanol for instance would weigh less than a equal volume of water. So it would stand to reason that a strong beer with higher alcohol % would be lighter than a 'lite' beer, which would contributes to the beer floating in an esky.
Ask Dr. Karl he will know the answer.
Lite beer has nothing to do with lightweight. I doubt if the relative density of beer is much different from that of water. More likely there is some gas in the can, making the average RD of the can below 1.0.