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## QuestionPhysicsClass 12

A particle is moving in a circular path of radius a under the action of an attractive potential $${U}=-\frac{{{k}}}{{{2}{r}^{{{2}}}}}$$. Its total energy is :
(A) $$-\frac{{{3}}}{{{2}}}\frac{{{k}}}{{{a}^{{{2}}}}}$$
(B) $$-\frac{{{k}}}{{{4}{a}^{{{2}}}}}$$
(C) $$\frac{{{k}}}{{{2}{a}^{{{2}}}}}$$
(D) Zero