JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Second Law of Motion

  • question_answer
    A second's pendulum is mounted in a rocket. Its period of oscillation decreases when the rocket        [CBSE PMT 1994]

    A)                         Comes down with uniform acceleration            

    B)                         Moves round the earth in a geostationary orbit            

    C)                         Moves up with a uniform velocity            

    D)                         Moves up with uniform acceleration          

    Correct Answer: D

    Solution :

                                \[T=2\pi \sqrt{\frac{l}{g}}\]. T will decrease, If g increases.             It is possible when rocket moves up with uniform acceleration.


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