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JIPMER Jipmer Medical Solved Paper-2006

  • question_answer
    The angular momentum of a rotating body changes from \[{{A}_{0}}\] to \[4{{A}_{0}}\] in 4 minutes. The torque acting on the body is:

    A) \[3/4{{A}_{0}}\]  

    B)                                        \[4{{A}_{0}}\]                   

    C) \[3{{A}_{0}}\]                   

    D)        \[3/2{{A}_{0}}\]

    Correct Answer: A

    Solution :

    Torque \[\tau =\frac{dL}{dt}=\frac{(4{{A}_{0}}-{{A}_{0}})}{4}\] \[=\frac{3{{A}_{0}}}{4}.\]


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