A particle of mass `m` is moving in a horizontal circle of radius r, under a centripetal force equal to `- (K//r^(2))`, where K is constant. What is the total energy of the particle ?

Options

A. `(k)/( r)`
B. `-(k)/(2r)`
C. `-(k)/(r )`
D. `(k)/(2r)`

Answer

B