this post was submitted on 13 Mar 2025
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cross-posted from: https://lemmy.ml/post/27121839

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[–] wuphysics87@lemmy.ml -1 points 1 day ago (5 children)

Quick 'proof' the taller the can, the more material used:

Consider two cases ignoring the top and bottom only focussing on the surface area. In the first case, you flatten so much the can has no height. This forms a ring that when unwrapped makes a length of 2 pi R.

Now stretch the can to be 'infinitely' long. By construction, this is longer than 2 pi r. Given both are made of aluminum, and have the same density, the larger can has more mass requiring more material.

The total mass must be a continuous function ranging from the linear mass density times the circumference of the circle to the same mass density time times the 'length' of the infinite line. This must remain true for any small increase in length between the two.

I'll leave this as an exercise to the reader. What if the circle has an infinite radius?

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[–] pyre@lemmy.world 4 points 1 day ago* (last edited 1 day ago) (4 children)

yeah but also that's too much coke. 355ml? jesus, are you eating lava wtf do you need that much sugar water for

[–] Darkassassin07@lemmy.ca 4 points 1 day ago (1 children)

That's a standard sized drink can in pretty much all of North America. Anything smaller is rare/unusual (though occasionally available).

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[–] PolarisFx@lemmy.dbzer0.com 2 points 1 day ago

*High fructose corn syrup water

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[–] LovableSidekick@lemmy.world 3 points 1 day ago

I think this falls under the term "merchandising", which includes "family size" or "party size" things that cost more per ounce than regular size.

[–] driving_crooner@lemmy.eco.br 6 points 2 days ago

Damn, 123% rise.

[–] kaerypheur@lemmy.world 1 points 1 day ago

Welcome to the world, m8! :,-)

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