A thin uniform rod of length $l$ and mass $m$ is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is $\omega $. Its center of mass rises to a maximum height of:
${1 \over 6}\,\,{{l\omega } \over g}$
${1 \over 2}\,\,{{{l^2}{\omega ^2}} \over g}$
${1 \over 6}\,\,{{{l^2}{\omega ^2}} \over g}$
${1 \over 3}\,\,{{{l^2}{\omega ^2}} \over g}$
Solution
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