1. The problem statement, all variables and given/known data How far from a very small 110kg ball would a particle have to be placed so that the ball pulled on the particle just as hard as the earth does? 2. Relevant equations Fg= gMm/r^2 3. The attempt at a solution I used the equation and plugged in the numbers for the ball and the earth, but then I realized that I needed to use the mass for the particle. However, I don't know what the mass for the particle is.