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A cooling fan is turned off when it is running at 850 rev/min. It turns 1350 revolutions before it comes to a stop. (a)

 

A cooling fan is turned off when it is running at 850 rev/min. It turns 1350 revolutions before it comes to a stop. (a) What was the fan's angular acceleration, assumed constant? (Answer: -0.47 rad/s2) (b) How long did it take for the fan to come to a complete stop? (Answer: 190 s) (c) How many revolutions would it take in 50 s. (Answer: 614 rev)

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