What causes objects with more condensed particles to be attracted to the ground stronger than less condensed particles?
Look...I know where you're going with this and you are going to say, it's because of gravity.
What I can't understand is, why accept a force that clearly does not exists except as a word to describe the reason we stick to a spinning ball.
Atmospheric pressure amply explains what happens on earth.
The up and down scenario can be explained like I told you. Our bodies sense up and down.
Gravity is just a con like all the rest of this space junk.
Except air pressure does not explain what happens on earth because A: Air is not sorted according to density of individual particles, B: The various Air molecules, like all other molecules, push in all directions against all other molecules. If the push of molecules dictated direction, the lower pressure above would cause the net push to be upwards, causing a rise, such as what happens with a ball underwater.
Air is sorted according to density.
How can lower pressure cause a net push to be upwards?
Air is comprised of Nitrogen, Oxygen, Argon, Co2, Neon, Helium, and several other elements and compounds of different densities/ weights. These are not sorted into layers, but all mixed together.
A lower pressure causes a net upward push because the pressure pushes equally in all directions, but receives less push from where the pressure is lower, this causes a flow from high pressure to low pressure unless there is an outside force preventing it from doing so. As air pressure is lower the higher you go, the new flow and net push is upwards.