Ok, this is a scanned solution of the problem according to the book. It's problem 13.
http://img218.imageshack.us/f/002kfv.jpg/
What I don't understand is why is angular acceleration negative, and a is positive. Shouldn't they both be negative? Also, how did they get v = romega, isn't romega...
1)Problem statement
A translating and rotating ring of mass 1 kg, angular speed of 500 rpm, and translational speed of 1 m/s is placed on a horizontal surface. The coefficient of friction between the ring and the surface is 0.35.
Outside radius is 3 cm.
This is a problem from a FE...