# Stable particle ring - JEE

**Classical Mechanics**Level 2

\[ \begin{array} { l l l } & (1) \frac{1}{2} \sqrt{ \frac{GM}{R} ( 1 + 2 \sqrt{2}) } \qquad \qquad & (2) \sqrt{ \frac{ GM } {R} } \\ & (3) \sqrt{ 2 \sqrt{2} \frac{ GM}{R} } & (4) \sqrt{ \frac{GM}{R} ( 1 + 2 \sqrt{2} ) } \\ \end{array} \]

Choose the number which corresponds to the correct answer.