Suppose the experiment was conducted in the same manner, but the axle was now off center of the solid disk. Would you expect the value of the moment of inertia to be less than, the same as, or more than the value of the moment of inertia when the axle is through the center of the disk

Question

Physics

Brodie Cobb

16 May, 05:26

Suppose the experiment was conducted in the same manner, but the axle was now off center of the solid disk. Would you expect the value of the moment of inertia to be less than, the same as, or more than the value of the moment of inertia when the axle is through the center of the disk

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Harris · Answer 1

If Ig be moment of inertia about an axis through centre of mass and I be moment of inertia through any other axis parallel to earlier axis, then according to theory of parallel axis,

I = Ig + Md²

where M is mass of the body and d is distance between two parallel axis.

So I is greater than Ig.