MHT CET 2025 Physics question
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 ''. Its centre of mass rises to a maximum height of (g = acceleration due gravity)
Answer: (D)
Solution
The angular speed is maximum at the lowest position, where all the energy is kinetic: with for a rod about its end, so . At the extreme position the rod is momentarily at rest and this energy has become potential energy
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