JCECE Engineering JCECE Engineering 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 anybody cannot be zero.


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