Message from @Hamburger Guy

Discord ID: 564182899222642708


2019-04-06 20:15:03 UTC  

Each balloon has the same amount of helium

2019-04-06 20:16:08 UTC  

man(100 / 0.07) + n x (0.001 / 0.01)

2019-04-06 20:16:15 UTC  

density = mass / volume

2019-04-06 20:17:03 UTC  

by adding more ballons you are increasing the volume, but the total mass does not increase significantly, in fact the amount of mass you are adding is less than the equivalent amount of mass you would be adding if you added balloons of air.

2019-04-06 20:17:30 UTC  

Ok let's use easier numbers I am lost

2019-04-06 20:17:39 UTC  

One balloon is 3 kilos

2019-04-06 20:17:48 UTC  

man = 100kg mass, 0.07 m^3 volume

2019-04-06 20:17:55 UTC  

n = number of balloons

2019-04-06 20:18:05 UTC  

0.0001kg = mass of balloon full of helium

2019-04-06 20:18:20 UTC  

0.01 m^3 = volume of balloon

2019-04-06 20:18:40 UTC  

Ok

2019-04-06 20:19:53 UTC  

so do you concur that were I to attach a sufficient number 'n' of helium balloons to myself, I would ascend, yes?

2019-04-06 20:19:53 UTC  

So mass of one balloon is 0.0001/0.01

2019-04-06 20:19:58 UTC  

I mean density

2019-04-06 20:20:06 UTC  

about that

2019-04-06 20:20:29 UTC  

Density of two balloons is 0.0002/0.02

2019-04-06 20:20:32 UTC  

depends on what sort of balloon you're using, what material, rigid or inflatable

2019-04-06 20:20:36 UTC  

Or simplified the same thing

2019-04-06 20:20:49 UTC  

wrong

2019-04-06 20:21:17 UTC  

density of two balloons is 0.0001/0.01 + 0.0001/0.01

2019-04-06 20:21:25 UTC  

What

2019-04-06 20:21:32 UTC  

No.

2019-04-06 20:21:33 UTC  

which is the same as 0.0002/0.01

2019-04-06 20:21:48 UTC  

The mass increases, not the density.

2019-04-06 20:21:53 UTC  

What's 1/2 + 1/2 ?

2019-04-06 20:22:00 UTC  

You have to do the mass and the volume of the ENTIRE system

2019-04-06 20:22:03 UTC  

The total buoyant force increases, though.

2019-04-06 20:22:29 UTC  

and even forgetting the math it's common sense that volume increases

2019-04-06 20:22:41 UTC  

By adding a second balloon, you've doubled both the mass and the volume, so they cancel each other out.

2019-04-06 20:22:43 UTC  

the mass increase so does the volume, however the increase in mass is much much less than the increase in mass would be if you were to fill the balloons with air

2019-04-06 20:23:07 UTC  

that doesn't matter

2019-04-06 20:23:18 UTC  

it could be infinitely less

2019-04-06 20:23:32 UTC  

as long as the ratio stays the same...

2019-04-06 20:24:46 UTC  

Which it obviously does if the helium balloons are identical.

2019-04-06 20:25:43 UTC  

Air has a density of about 1.2kg/m^3, however helium at room temperature at standard air pressure is about 0.164kg/m^3 and hydrogen is lower about 0.1kg/m^3

2019-04-06 20:26:00 UTC  

So for each meter cubed of helium you are adding you can lift about 1kg

2019-04-06 20:26:20 UTC  

Are we changing the subject ok then

2019-04-06 20:26:21 UTC  

So when you have about 100 m^3 of helium you should be able to lift a man

2019-04-06 20:26:28 UTC  

Which law is this?

2019-04-06 20:26:37 UTC  

Archimdedes principle

2019-04-06 20:26:38 UTC  

First law