A thin circular ring of mass M and radius r is rotating about its axis with constant angular velocity $\omega $. Two objects each of msass m are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with angular velocity given by
${{\left( {M + 2m} \right)\omega } \over {2m}}$
${{2M\omega } \over {M + 2m}}$
${{\left( {M + 2m} \right)\omega } \over M}$
${{M\omega } \over {M + 2m}}$
Solution
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