Banking Physics Wave Mechanics Question Bank Mechanics

  • question_answer  If a running boy jumps on a rotating table, which of the following is conserved?

    A)  Linear momentum        

    B)  KJE

    C)  Angular momentum        

    D)  None of these

    Correct Answer: C

    Solution :

     The boy does not exert a torque to rotating table by jumping, so angular momentum is conserved i.e., \[\frac{d\widehat{L}}{dt}=0\Rightarrow \overrightarrow{L}=\] constant.

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