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Comparing a disc, ring or sphere about tangents or diameters

This type of question, asked 5 times: 3 May 2023 S1, 4 May 2023 S1, 16 Apr 2026 S2, 20 Apr 2026 S2, 13 May 2026 S2. All 5 questions below, oldest first.

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  1. Question 1

    3 May 2023 S1

    25
    Ratio of radius of gyration of a circular disc to that of circular ring each of same mass and radius around their respective axes is

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  2. Question 2

    4 May 2023 S1

    7
    A disc and a ring both have same mass and radius. The ratio of moment of inertia of the disc about its diameter to that of a ring about a tangent in its plane is

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  3. Question 3

    16 Apr 2026 S2

    105
    A solid sphere of mass M and a disc of mass M2\dfrac{M}{2} have the same radius. The ratio of moment of inertia of the disc about a tangent in its plane to the moment of inertia of the sphere about its tangent will be

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  4. Question 4

    20 Apr 2026 S2

    107
    A solid sphere of mass 5 kg and a disc of mass 4 kg have the same radius. The ratio of moment of inertia of the sphere about its tangent to the moment of inertia of the disc about a tangent in its plane will be x:yx : y. The value of xx and yy respectively is

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  5. Question 5

    13 May 2026 S2

    107
    The ratio of radius of gyration of circular disc about a tangential axis in its plane and of a circular ring of the same radius about a tangential axis in its plane is

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