Multiple choice

A rigid uniform rod AB of length L and mass m is hinged at C such that AC = L/3, CB = 2L/3. Ends A and B are supported by springs of spring constant k. The natural frequency of the system is given by

  1. $\sqrt\frac{k}{2m}$
  2. $\sqrt\frac{k}{m}$
  3. $\sqrt\frac{2k}{m}$
  4. $\sqrt\frac{5k}{m}$
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D Correct answer
Explanation

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