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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2002

  • question_answer
    The time period of a simple pendulum in a stationary lift 10 T. when the lift falls freely, then its time period will be:

    A)  T                            

    B)         2T  

    C)  \[\infty \]                          

    D)         0

    Correct Answer: C

    Solution :

    Time period\[T=2\pi \sqrt{\frac{l}{g}}\] When lift falls freely. Then net acceleration \[a=g-g=0\] So, time period will be infinite\[\infty \]


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