The potential energy of interaction between the semi-circular ring of mass M and radius R, and the particle of mass M placed at the centre of curvature of the semi-circular arc is:

Options

A. `-(GM^(2))/(R)`
B. `-(2GM^(2))/(R)`
C. `-(GM^(2))/(piR)`
D. none of these

Answer

A

Explanation

`v=-(GMM)/R=-(GM^(2))/R`