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

  • question_answer
    What effect occurs on the frequency of a pendulum if it is taken from the earth surface to deep into a mine [AFMC 2005]

    A)            Increases

    B)            Decreases

    C)            First increases then decrease

    D)            None of these

    Correct Answer: B

    Solution :

               In deep mine \[{g}'=g\,\left( 1-\frac{d}{R} \right)\]; i.e., g decreases so according to \[n\propto \sqrt{g},\] frequency also decreases.


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