A 126 g cd with a radius of 616 cm rotates with an angular


A 12.6 g CD with a radius of 6.16 cm rotates with an angular speed of 31.3 rad/s. What is its kinetic energy?

What angular speed must the CD have if its kinetic energy is to be doubled?

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Physics: A 126 g cd with a radius of 616 cm rotates with an angular
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