The natural frequency of a simply supported beam of length l with mass M at its centre, flexural rigidity EI and negligible beam mass is
- A. 1/(2*pi) * $\sqrt{48EI/Ml³}$
- B. 1/(2*pi) * $\sqrt{3EI/Ml³}$
- C. 1/(2*pi) * $\sqrt{EI/Ml³}$
- D. None of the above
Answer: A. 1/(2*pi) * $\sqrt{48EI/Ml³}$