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Unformatted text preview: 1 75. We use L = Iω and K = 2 Iω 2 and observe that the speed of points on the rim (corresponding to the speed of points on the belt) of wheels A and B must be the same (so ωARA = ωBrB). (a) If LA = LB (call it L) then the ratio of rotational inertias is I A L ω A ω A RA 1 = = = = = 0.333. I B L ω B ω B RB 3 (b) If we have KA = KB (call it K) then the ratio of rotational inertias becomes
2 I A 2K ω A ω = =B 2 ωA I B 2K ω B 2 R =A RB 2 1 = = 0.111. 9 ...
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Inertia

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