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September 30, 2014

September 30, 2014

Posted by **Kayla** on Saturday, November 19, 2011 at 12:20pm.

(a) What is the magnitude of that final angular velocity in terms of ω0? (Use the following as necessary: ω0.)

(b) What is the change in rotational kinetic energy of the system? (Use the following as necessary: K as the initial kinetic energy.)

Explain.

- Physics -
**bobpursley**, Saturday, November 19, 2011 at 12:23pmConservation of rotational momentum applies.

I1*w1+I2*w2= (I1+I2)wf

you know w2=-w1=wo

I1=k*mr1^2

I2=k*mr2^2

Solve for wf, it is just algebra.

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