(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

One dimension. In Fig. 13-33, two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 7.00 mA. A third particle C, of mass 75.0 mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at what x coordinate should C be placed so that the net gravitational force on particle A from particles B and C is zero?

2. Relevant equations

F=sqrt((GMm)/r^2) Where G=6.67E-11

3. The attempt at a solution

I know that M=75 and m=7. Multiplying that by 6.67E-11 I got 3.5E-8/r^2. If i set that equal to 0, then I the r to disappear

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: The Law of Gravitation

**Physics Forums | Science Articles, Homework Help, Discussion**