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

  • question_answer
    A simple pendulum hanging from the ceiling of a stationary lift has a time period T1. When the lift moves downward with constant velocity, the time period is T2, then   [Orissa JEE 2005]

    A)            \[{{T}_{2}}\] is infinity      

    B)            \[{{T}_{2}}>{{T}_{1}}\]

    C)            \[{{T}_{2}}<{{T}_{1}}\]     

    D)            \[{{T}_{2}}={{T}_{1}}\]

    Correct Answer: B

    Solution :

               \[U=\frac{1}{2}K{{x}^{2}}\] and g is same in both cases so time period remain same.


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