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A hollow and a solid cylinder share the same mass and radius. Ratio of I (hollow : solid) about their axes?
A1 : 1
B4 : 1
C1 : 2
D2 : 1
Answer & Solution
Correct answer: D. 2 : 1
The hollow cylinder has I = MR^2 and the solid one MR^2/2, so the ratio is 2 : 1.
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