I need help with this question: http://img804.imageshack.us/img804/2278/unledsbg.jpg [Broken]
For a, I got omega = 18.63 rad/s by using methods of conservation of energy. Can someone tell me if I did this right? If not, please help me out! To be honest, I thought I had to use conservation of momentum for this since it involves a collision, but its equations don't involve angular velocity.
Conservation of energy/momentum
The Attempt at a Solution
a) omega = 18.63 rad/sec
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