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Rotational Energy and Angular Momentum. Rotational Energy. Translational. Rotational. Example. What are the translational and rotational kinetic energies of a wheel that is rolling at 10 m/s, has a radius of 0.3 m, a mass of 2 kg and a moment of inertia of 0.09 kgm 2 ?. Angular Momentum.
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Rotational Energy Translational Rotational
Example What are the translational and rotational kinetic energies of a wheel that is rolling at 10 m/s, has a radius of 0.3 m, a mass of 2 kg and a moment of inertia of 0.09 kgm2?
Angular Momentum Angular momentum is conserved if there is no net outside torque.
Example http://www.sparknotes.com/testprep/books/sat2/physics/chapter10section6.rhtml
A skater is spinning with an angular speed of 4 rad/s with his arms extended. By pulling his arms in, he reduces his moment of inertia from 10 kgm2 to 5 kgm2. What is his new angular speed? Before After