A particle is moving in a circular path

Question:

A particle is moving in a circular path of radius a under the action of an attractive potential $\mathrm{U}=-\frac{\mathrm{k}}{2 \mathrm{r}^{2}}$. Its total energy is :-

  1. $\frac{k}{2 a^{2}}$

  2. Zero

  3. $-\frac{3}{2} \frac{\mathrm{k}}{\mathrm{a}^{2}}$

  4. $-\frac{\mathrm{k}}{4 \mathrm{a}^{2}}$


Correct Option: , 2

Solution:

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