# Thread: Comparing Universal Gravitation to Electric Potential

1. ## Comparing Universal Gravitation to Electric Potential

I'm being asked to compare the two laws, being the Law of Universal Gravitation and the Law of Electric Potential.

Can someone help me and give me a few things to compare? I'm stuck on this one question.

2. ## Just what are these laws?

It would help a lot if you send the symbolic notation with a description of these things.

Are you referring to Coulomb's law for Electrostatic Forces (rather than electric potential)? As far as I know, there is both a gravitational potential and an electrical potential, neither of which look like the universal law of gravitation.

Coulomb's law for electrostatic forces:
F = k[Qq/r^2]
where F is electrostatic force, k is a constant (9 x 10^9 according to text on my lap), Q and q are values of two different charges, and r is the distance between the charges.

Newton's law for gravity:
F = G[Mm/r^2]
where F is gravitational force, G is a gravitation constant, M and m re the two different masses, and r is the distance between them.

If it something else you have in mind, I don't know.

You will probably get better results if you can post explicit formulae.

There is no sense going on if this is not what you are looking for.

Bye.