JEE Main & Advanced Physics Simple Harmonic Motion Question Bank Simple Pendulum

  • question_answer
    A simple pendulum is attached to the roof of a lift. If time period of oscillation, when the lift is stationary is T. Then frequency of oscillation, when the lift falls freely, will be [DCE 2002]

    A)            Zero                                         

    B)            T

    C)            1/T

    D)            None of these

    Correct Answer: A

    Solution :

                       When lift falls freely effective acceleration and frequency of oscillations be zero            \[{{g}_{eff}}=0\] Þ \[{T}'=\infty \], hence a frequency = 0.


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