F an object has a moment of inertia 28 kg·m2 and rotates with an angular speed of 106 radians/s, what is its rotational kinetic energy

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13-11-2017
Physics

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F an object has a moment of inertia 28 kg·m2 and rotates with an angular speed of 106 radians/s, what is its rotational kinetic energy

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mokatoken mokatoken · Answer 1 · 2017-11-13T09:44:38+01:00

mokatoken mokatoken

13-11-2017

I'm assuming by angular speed you mean angular velocity. So the formula for rotational kinetic energy is 0.5*I*w, so 0.5*28*(106^2)=157304. It's really high but I guess that makes sense because of how high the angular velocity is.

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