There have been suggestions that the value of the gravitational constant $G$ becomes smaller when considered over very large time period (in billions of years) in the future. If that happens, for our earth, 

Supposing Newton's law of gravitation for gravitation forces $F_1$and $F_2$between two masses $m_1$and $m_2$at positions $r_1$and $r_2$read

$F_1=-F_2=\frac{r_{12}}{r_{12}^3}G{M}_0^2{\left(\frac{m_1{m}_2}{M_0^2}\right)}^n$

where $M_0$is a constant of the dimension of mass, $r_{12}=r_1-r_2$and $n$is a number? In such a case 

Which of the following are true?

Two identical satellites are at $R$ and $7R$ away from the earth surface, the wrong statement is ($R=$Radius of earth)

Two artificial satellites of same mass are moving around the Earth in circular orbits of different radii. In comparison to the satellite with lesser orbital radius, the other satellite with higher orbital radius will have