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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2010

  • question_answer
    One circular ring and one circular disc, both are having the same mass and radius. Then both of their moments of inertia about the axes passing   through their centres and perpendicular to their planes, will be in the ratio

    A)  1 : 1

    B)  2 : 1

    C)  1 : 2   

    D)  4 : 1

    Correct Answer: B

    Solution :

     The ratio of moments of inertia \[\frac{{{I}_{ring}}}{{{I}_{disc}}}=\frac{M{{R}^{2}}}{1/2M{{R}^{2}}}=2:1\]


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