- #1

court2011

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## Homework Statement

A 16 g CD with a radius of 6.0 cm rotates with an angular speed of 42 rad/s.

(a) What is its kinetic energy?

## Homework Equations

k=1/2Iw^2

## The Attempt at a Solution

k=1/2(0.016x0.0036)(1764)=0.05 J