Two equal masses are at the ends of a massless 50-cm-long
Chapter 12, Problem 12.31(choose chapter or problem)
Two equal masses are at the ends of a massless 50-cm-long rod. The rod spins at 2.0 rev/s about an axis through its midpoint. Suddenly, a compressed gas expands the rod out to a length of 160 cm. What is the rotation frequency after the expansion?
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