[tex]F=\frac{G\cdot M\cdot m}{d^2}[/tex]
If:
[tex]\begin{gathered} M_2=3M \\ and \\ d_2=2d \\ Then: \\ F=\frac{G\cdot M_2\cdot m}{d_2^2} \\ F=\frac{G\cdot3M\cdot m}{(2d)^2} \\ F=\frac{G\cdot3M\cdot m}{4d^2} \\ Factor: \\ F=\frac{3}{4}\cdot\frac{G\cdot M\cdot m}{d^2} \end{gathered}[/tex]
Answer:
3/4
