Physics
posted by Mike .
A centrifuge is spinning at 3600 rev/min, and when turned off, it rotates 50 times before coming to a stop.
A) What is the initial angular velocity?
B) What is the angle (in radians) that the centrifuge passes through before stopping?
C) What is the angular acceleration?
D) How long does it take for the centrifuge to come to rest?
Show some work. Thanks!

A. ISNT its intial angular velocity given? change it to radians/sec
B. what is 50*2PI
C wf^2=wi^2+ 2*alpha*displacement
solve for alpha.