Message from @Hamburger Guy
Discord ID: 564183048309178388
One balloon is 3 kilos
man = 100kg mass, 0.07 m^3 volume
n = number of balloons
0.0001kg = mass of balloon full of helium
0.01 m^3 = volume of balloon
Ok
so do you concur that were I to attach a sufficient number 'n' of helium balloons to myself, I would ascend, yes?
So mass of one balloon is 0.0001/0.01
I mean density
about that
Density of two balloons is 0.0002/0.02
depends on what sort of balloon you're using, what material, rigid or inflatable
Or simplified the same thing
wrong
density of two balloons is 0.0001/0.01 + 0.0001/0.01
What
No.
which is the same as 0.0002/0.01
The mass increases, not the density.
What's 1/2 + 1/2 ?
The total buoyant force increases, though.
and even forgetting the math it's common sense that volume increases
By adding a second balloon, you've doubled both the mass and the volume, so they cancel each other out.
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
that doesn't matter
it could be infinitely less
as long as the ratio stays the same...
Which it obviously does if the helium balloons are identical.
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
So for each meter cubed of helium you are adding you can lift about 1kg
Are we changing the subject ok then
So when you have about 100 m^3 of helium you should be able to lift a man
Which law is this?
Archimdedes principle
First law
We are still one that?
F = pVg
p = density
V = volume
g = gravity