Gravity and electromagnetism have not always been linked. It does seem hard to imagine that with so many atoms, molecules and especially electrons that something must be working to keep things down. Specifically objects or mass is attracted to other mass. Often we only look at gravity in planetary terms. The Moon pulls the tides the Sun pulls on the Earth.
So what causes the attraction? It may be that the mysterious dance of electrons and the nuclei they surround can cause an attractive force. Imagine particles in towards the center of mass. The electrons are going to be in abundance and we know from electrostatics that they repel each other. Often enough this repulsion from the center of mass will be enough to accelerate the electron for a while. The acceleration can be seen all the way from the center of mass to the periphery of the mass in a sort of electron buoyancy.
Electrons will be accelerated from the center of mass and they will also be attracted back to maintain charge balance conditions. The attraction back to the center of mass may happen with a drift velocity as the electron bangs from atom to atom - molecule to molecule on the way back down.
I've tried to present this in a diagram shown below. At the center of the circular mass electrons, marked e, accelerate away from the center of mass with a centripetal force. The equal and opposite reaction acts on the molecules around the accelerating electron. The force, F, is dense and acts in a uniform manner. The force at the periphery of the mass turns the electron back towards the center of mass. In reality many particles will fly off into space. The force at the periphery pushes some matter away but this force is diffuse compared with the force towards the center of mass at any point.
The diagram shows X3 at the center of mass so that the number of electrons at the center and at the periphery balances out.
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