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Newton=boss

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**1.A centrifuge rotor rotating at 5000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.60 m·N. If the mass of the rotor is 4.70 kg and it can be approximated as a solid cylinder of radius 0.0780 m, through how many revolutions will the rotor turn before coming to rest?**

**2. Homework Equations Change rpms to rad/sec, Theta = Omega (initial)*time + 1/2*alpha*(t^2).. alpha*1/2*MR^2= Torque**

**3. I get 1950 revolutions once i switch back to revolutions by mult by 180/pi..**

Is it my physics or my math? help please!