Not so Easy | Rotational Mechanics

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Question Choose the correct option(s)
(A) The moment of inertia about the axis of rotation is the same in both cases.
(B) The wobbling in case 2 is due to the centre of mass not lying on the axis of rotation.
(C) The wobbling in case 2 is due to the principal axis not lying along the rotation axis.
(D) The angular momentum is parallel to the angular velocity in case 1 but not in case 2.

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a and c? but i dont really understand c? what exactly is a principal axis?

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