# Gravitoelectromagnetic force

## Homework Statement

There are two force equations in this wiki page: http://en.wikipedia.org/wiki/Gravitoelectromagnetism

## The Attempt at a Solution

The conventional Lorentz force is

$$F = q(E + v \times B)$$

It says that the gravielectromagnetic force equation:

$$F = m(E_g + v \times B_g)$$

Is it's gravitational analogue. Yet, the only difference between the equations is that mass and charge have been exchanged.

How can the dimensions be right in the second equation?

Thank you!

## Answers and Replies

voko
Yet, the only difference between the equations is that mass and charge have been exchanged.

No, that's not the only difference. The other symbols have changed, too. What are their units?

what is $$E_g$$?

I take it then, it's not simply the electric field?

voko
It's not. The article explains that down to the units involved. Give it another try, just do it carefully :)