BCECE Medical BCECE Medical Solved Papers-2014

  • question_answer
    Moment of inertia of wheel about the axis of rotation is 3 MKS units. Its kinetic energy will be 600 J, if period of rotation is (in seconds)

    A)  \[\pi \]                   

    B)  \[\frac{\pi }{5}\]

    C)  \[\frac{\pi }{10}\]               

    D)  \[2\pi \]

    Correct Answer: C

    Solution :

    \[E=\frac{1}{2}l{{\omega }^{2}}\]                 \[\omega =\sqrt{\frac{2E}{l}}=\sqrt{\frac{2\times 600}{3}}=20\] \[\omega =\frac{2\pi }{T}=20\Rightarrow T=\frac{\pi }{10}\]


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