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

A 12g CD with a radius of 7.0 cm rotates with an angular speed of 35 rad/s.

What is its kinetic energy?

2. Relevant equations

3. The attempt at a solution

I used K=(1/2)mv^2(1+I/mr^2)

v=[tex]\omega[/tex]r=(35rad/s)(0.07m)=2.45m/s

K=(1/2)(0.012kg)(2.45m/s)^2(1)=0.36

And it's wrong. Am i using the right formula? What should I do

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Kinetic Energy of Rolling Motion

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