Why does a rock fall and a helium ballon rise? I get it, because of density. But, *how* does density work, and *how* does density dictate the direction that objects and fluids move?

Gravity = explained by buoyancy and density.

what about if there’s no atmosphere ?

How does buoyancy work?

That isn't true neither of those things are forces they have no direction

Exactly, there's no directional influence for buoyancy. Except in the mathematical formula for buoyancy, there is a directional inlfuence. It is labled as **G**.

then the entire argument is just gone

^

if the atoms are closer together you need more attoms to make up an item a less dence object dosent need as many atoms

if there’s no atmosphere for buoyant force to act in

@tekashi what argument?

then how does it influence gravity

Buoyancy requires a medium, so do objects float in vacuum chambers?

that buoyancy and density make up gravity

exactly my point @Quorum

You all keep bringing up vaccuum chambers.

yeah?

Nothing just floats in vaccuum chambers.

What matter do we know has the lowest known boiling point?

Yet you claim it does in space.

ok

Sorry but according to you guys there are stars so large you could fit trillions of earths in them.

I don't get how that follows

never seen a boat is space tbh

Their gravitational pull would yank it.

So ignorant...

yh

ok

Would yank what?

Or what matter do we know has the lowest known melting point?

In other words, what matter do we know will remain a fluid while all other matter are solid?

prolly something like helium irk off the top of my head

Also, the reason I point out that objects dont float in vacuum chambers is to demonstrate how objects falling does not require a medium, which buoyancy does.

Objects fall even where there is no medium for buoyancy.

And when Helium is a liquid in a chamber, what is above the surface of the helium?

air

but at that temperature, nothing else will be a gas if helium is already a liquid

tuche

i thought your argument would be why isnt the helium rising

Why isn't the helium rising?

as its a liquid its now more dence then what it was befour