Railways Technical Ability Vibration Analysis Question Bank Vibration Analysis

  • question_answer The equation of free vibrations of a system is \[\ddot{x}+36\,\,{{\pi }^{2}}X=0.\] Its natural frequency is:

    A) \[46\text{ }Hz\]             

    B) \[3\,\,\pi Hz\]

    C) \[3\text{ }Hz\]               

    D) \[6\,\pi Hz\]

    Correct Answer: C

    Solution :

    \[{{f}_{n}}=\frac{1}{2\pi }\sqrt{36{{\pi }^{2}}}=3Hz\]


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