[SampleMan]

If gravity is as you say, why do object accelerate faster in a fall on Earth than they do on the moon.

As in your example, the Earth and the Moon are just groupings of individual atoms right?

Again, you are only doing half of the equation.

[ArrogantBustard]

I did NOT do "half the equation".

Objects accelerate faster in a fall on Earth than they do on the Moon because Earth is bigger than the Moon. Work the equations for yourself. Substitute the mass of Earth, Jupiter, another hammer, whatever you like. You can solve for the acceleration towards any of these.

Gravitational acceleration towards any object X is a function of the mass of that object and the distance from that object, as I showed upthread.

Don't wave your hands, do the math.

[DuncanWaring]

Objects accelerate faster in a fall on Earth than they do on the Moon, because each atom of the "falling" object is attracted to each and every atom of the Earth (or the Moon), and the Earth has a lot more atoms.

It's like taking two identical rubber bands and stretching one to twice its unstretched length. That will produce a certain amount of tension. If you then stretch both that same amount, you'll get twice the force.

Same thing for inter-atomic attractions.