ch11-p045 - 45(a No external torques act on the system...

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KI I I II I f i i =+ + F H G I K J = 1 2 2 2 1 6 11 1 2 2 b g ω . Therefore, the fraction lost, KKK if i di is 2 2 /6 2 1 1 0.667. /2 3 f i ii K I −= = = 45. (a) No external torques act on the system consisting of the two wheels, so its total angular momentum is conserved. Let I 1 be the rotational inertia of the wheel that is originally spinning at i bg and I 2 be the rotational inertia of the wheel that is initially at rest. Then I 2 ωω b g and
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