JEE Main & Advanced Physics Rotational Motion Question Bank Self Evaluation Test - System of Particles Rotational Motion

  • question_answer
    One solid sphere A and another hollow sphere B are of same mass and same outer radii. Their moments of inertia about their diameters are respectively \[{{I}_{A}}\]and \[{{I}_{B}}\] such that Here \[{{\rho }_{A}}\]and \[{{\rho }_{B}}\]represent their densities.

    A) \[{{I}_{A}}={{I}_{B}}\]         

    B) \[{{I}_{A}}>{{I}_{B}}\]

    C) \[{{I}_{A}}<{{I}_{B}}\]          

    D)        \[{{I}_{A}}/{{I}_{B}}={{\rho }_{A}}={{\rho }_{B}}\]

    Correct Answer: C

    Solution :

    [c] In a hollow sphere, the mass is distributed away from the axis of rotation. So, its moment of inertia is greater than that of a solid sphere.


You need to login to perform this action.
You will be redirected in 3 sec spinner