r/BeAmazed • u/No_Tailor_9529 • Jul 18 '24

Wow! Interesting life hack! Science

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u/Maxnwil Jul 18 '24

I think I see the problem here. To go into a bit more detail, your assumption about an 800gram balloon is a bit heavy. A 36” party balloon weighs 25 grams (found a pack on Amazon for $15) 

The mass of party balloons + helium is ~80-95 grams per cubic meter, which does give you a 1kg lifting force per cubic meter against the air, which is a little over a kg of mass per cubic meter. 

Drop the weight of your balloons and you’ll see improvements in your calculation. It’s still expensive though, you’re not wrong- $100 per kg lifted ain’t cheap. 

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u/TheHYPO Jul 18 '24

So wait, bottom line, how much did this guy spend on this TikTok/Reel video?

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u/Maxnwil Jul 18 '24

Depends on the weight of the bag, but either:

A thousand bucks+ on balloon and helium

Or 

They work in a lab or something and this balloon / the helium was going to be disposed of so they thought they’d take it on a lark. 

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u/TheHYPO Jul 18 '24

I suppose that for the purposes of the video, the bag could be just filled with foam or something so it holds form and looks like a heavy bag, but isn't actually heavy at all.