question_answer

A uniform ring of mass M and radius R is placed directly above a uniform sphere of mass 8 M and of same radius R. The center of the ring is at a distance of \[d=\sqrt{3}R\] from the center of the sphere. The gravitational attraction between the sphere and the ring is

A) \[\frac{8G{{M}^{2}}}{{{R}^{2}}}\]                          

B) \[\frac{2G{{M}^{2}}}{\sqrt{3}{{R}^{2}}}\]

C) \[\frac{3G{{M}^{2}}}{2{{R}^{2}}}\]                        

D) \[\frac{\sqrt{3}G{{M}^{2}}}{{{R}^{2}}}\]