(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

"A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 12.6 rad/s (see figure below). The student turns the spinning wheel upside down, reversing the direction of its angular velocity. This causes the student to begin to rotate. Find the student's final angular velocity. The moments of inertia of the wheel and of the student are 0.340 kg · m2 and 2.25 kg · m2 respectively."

2. Relevant equations

How do you find the final angular velocity with the given information?

3. The attempt at a solution

Well since initial momentum is equal to final momentum, IWo = IWf +iw, where I is the moment of inertia of the wheel, Wo is the initial angular velocity of the wheel, Wf is the final angular velocity of the wheel, i is the moment of inertia of the girl, and w is the angular velocity of the girl. So, (I(Wo-Wf))/i = w. I guessed that Wf would equal -Wo, but I was mistaken, or I made a calculation error.

Thanks in advance for your help :D

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# Homework Help: Conservation of Angular Momentum Homework Help

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