Physics

Problem

Consider a ring of mass

m

and radius

r

. Maximum gravitational intensity on the axis of the ring has value: (A)

\frac{Gm}{r^2}

(B)

\frac{2Gm}{\sqrt{3}r^2}

(C)

\frac{2Gm}{3\sqrt{3}r^2}

(D)

\frac{Gm}{3\sqrt{3}r^2}