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JCECE Medical JCECE Medical Solved Paper-2005

  • question_answer
    Total angular momentum of a rotating body remains constant,, if the net torque acting on the body is:

    A)  zero          

    B)  maximum

    C)  minimum     

    D)  unity

    Correct Answer: A

    Solution :

     From law of conservation of angular momentum, when no external torque acts on a rotating body, then the total angular momentum of the body remains constant. That is, If \[\tau =\frac{dJ}{dt}=0\] \[\Rightarrow \] \[J=I\omega =\text{constant}\] where \[I\]is moment of inertia and cd is angular velocity.


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