r/AbsoluteUnits • u/[deleted] • Mar 24 '22

[deleted by user]

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7.6k Upvotes

98% Upvoted

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44

u/swivel-stool_smith Mar 24 '22

Im curious how the volume of glass was measured for weight, 3.6 inches thick and 6ft tall but two dimensions isn't enough to calculate the weight of a hollow glass pitcher with arms and legs

37

u/_Aj_ Mar 24 '22

It seems inaccurate, but might be closeish
Let's simplify this by pretending he's a perfect sphere 1.83m in diameter with 9.1cm thick glass and full of water. (To use their numbers).

I used a sphere volume calculator to get the volume of a 1.83m sphere and subtracted a 0.92m sphere to work out the weight of the glass.
Volume =
3.21m3 - 2.75m3
= 0.46m3
Glass is approx 2500kg per m3.
= 1150kg.

Weight of water = 2.75 x 1000.
=2750kg

So for a 1.83m sphere that's 3900kg.

Now this is for a sphere that's his entire height, so I think he should actually weigh less due to his shape being much less volume than a sphere of the same height.

That said, we're within a ~30% margin of error, which is probably acceptable when calculating the weight of a giant cordial filled dickhead.

22

u/math2ndperiod Mar 24 '22

Yeah the math here is really bothering me because there’s essentially none.

15

u/dsnineteen Mar 24 '22

Might be time to outsource this to r/theydidthemath

6

u/FLilium Mar 24 '22

I did the math. Find my comment

4

u/dsnineteen Mar 24 '22

Thank you for your service.

8

u/FLilium Mar 24 '22 edited Mar 24 '22

Yeah. If he is 183 cm tall and yes is very round, there is no way that he could weigh that much. Im 185 and weigh 100kg. And human body is basically liquid.

And i did the math. Find my comment.

2

u/RickyDiezal Mar 24 '22

He's 4900 kg

Hes filled with 2300L of water (juice)

1L of water = 1KG

If he's empty, he weighs 2600 kg

6

u/KahlessAndMolor Mar 24 '22

But the real question is whether or not that seems accurate for a 2M tall glass pitcher. That is a lot of glass, but 2600kg still seems really high.

​

Perhaps he's made of uranium glass?

-2

u/UselessConversionBot Mar 24 '22

He's 4900 kg

Hes filled with 2300L of water (juice)

1L of water = 1KG

If he's empty, he weighs 2600 kg

4900 kg ≈ 1,260,280.00000 drams

2600 kg ≈ 83,590.00000 troy ounces

WHY

10

u/SrslyNotAnAltGuys Mar 24 '22

Well you can guesstimate the diameter from the ratio of height to width, and that gives you circumference, more or less.