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Question and Answer

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


Answer: D
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