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

what is the magnitude of Gravitational force

for the following picture(s)

(attached to forum)

2. Relevant equations

Fg = G M*M/D^2

3. The attempt at a solution

I tried to do some of them I know the equation for the second one is fG = 2G M*M/D^2

and for the third one it's Fg = 6G M*M/D^2

But I have no idea where the 2 came from for the second one and the 6 from the third one!

**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: Need universal Gravitation help

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