Railways Technical Ability Vibration Analysis Question Bank Vibration Analysis

  • question_answer In a simple spring mass vibrating system, the natural frequency \[{{\omega }_{n}}\] of the system is (k is spring stiffness m is mass and \[{{m}_{s}}\] is spring mass):

    A) \[\sqrt{\frac{k}{m-\frac{{{m}_{s}}}{3}}}\]                    

    B) \[\sqrt{\frac{k}{m+\frac{{{m}_{s}}}{3}}}\]

    C) \[\sqrt{\frac{k}{m+3{{m}_{s}}}}\]                   

    D) \[\sqrt{\frac{k}{m-3{{m}_{s}}}}\]

    Correct Answer: B


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