Question: Two bodies of masses $\mathrm{m}$ and $4 \mathrm{~m}$ are placed at a distance $\mathrm{r}$. The gravitational potential at a point on the line joining them where the gravitational field is zero is :-
$-\frac{6 \mathrm{Gm}}{\mathrm{r}}$
$-\frac{9 \mathrm{Gm}}{\mathrm{r}}$
zero
$-\frac{4 \mathrm{Gm}}{\mathrm{r}}$
Correct Option: , 2
Solution:
