Question 141 of 223

On the $x$-axis and at a distance $x$ from the origin, the gravitational field due to a mass distribution is given by $\dfrac{Ax}{{\left({x}^{2}+{a}^{2}\right)}^{3/2}}$ in the $x$-direction. The magnitude of the gravitational potential on the $x$-axis at a distance $x$, taking its value to be zero at infinity is: