question_answer

Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1 m, 2 m, 4 m, 8 m, respectively from the origin. The resulting gravitational potential due to this system at the origin will be  [NEET 2013]

A) \[-G\]    

B) \[-\frac{8}{3}G\]

C) \[-\frac{4}{3}G\]

D) \[-4G\]

Correct Answer: D

Solution :

The resulting gravitational potential,