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Three rods along the x, y and z axes: moment of inertia about one axis

The same question, asked 2 times: 9 May 2023 S2*, 15 May 2023 S1. Every wording below, oldest first.

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  1. Question 1

    9 May 2023 S2

    47
    Three thin rods, each mass '2M' and length 'L' are placed along x, y and z axis which are mutually perpendicular. One end of each rod is at origin. Moment of inertia of the system about x-axis is

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  2. Question 2

    15 May 2023 S1

    16
    Three thin rods, each of mass MM and length LL are placed along X, Y and Z axes which are mutually perpendicular. One end of each rod is at origin. M.I. of the system about Z axis is

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