JCECE Medical JCECE Medical Solved Paper-2012

  • question_answer
    If the external torque acting on a system is zero \[(i.e.,\,\tau =0),\] then

    A) \[J=0\]            

    B) \[F=0\]

    C)  \[\omega =0\]            

    D) \[\alpha =0\]

    Correct Answer: D

    Solution :

     By the relation \[\tau =I\alpha \] if \[\tau =0,\]then \[\alpha =0\] because moment of inertia of any body cannot be zero.


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