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91. We denote the wheel with subscript 1 and the whole system with subscript 2. We take
clockwise as the negative sense for rotation (as is the usual convention).
(a) Conservation of angular momentum gives
L = I
1
ω
1
=
I
2
2
, where
2
11
1
I
mR
=
. Thus
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 Spring '08
 Any
 Physics, Angular Momentum, Momentum

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