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AMU Medical AMU Solved Paper-2008

  • question_answer
    The maximum tension which an inextensible ring of mass 0.1 kg/m can bear is 10 N. The maximum velocity in m/s with which it can be rotated is

    A)  10                                         

    B)  \[\sqrt{10}\]

    C)  20                                         

    D)  15

    Correct Answer: A

    Solution :

                     From the relation,                 \[T=u{{r}^{2}}{{\omega }^{2}}=\mu {{v}^{2}}\]   \[(\because \,v=r\omega )\]                 \[{{v}^{2}}=\frac{T}{\mu }\]                 \[v=\sqrt{\frac{T}{\mu }}\] \[\therefore \]  \[v=\sqrt{\frac{10}{0.1}}\]                 \[v=\sqrt{100}=10\,m/s\]


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