A record turntable rotating at 33 1/3 rev/min slows down and stops in 36s after the motor is turned off.

Question

(a) Find its (constant) angular acceleration in revolutions per minute-squared.

(b) How many revolutions does it make in this time?

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I tried using a = w/t where
a = 0-33.3 / .6, but don't quite know where to go from there.

Answer 1

angAcc=changeinW/time
= (-33.3)/(36/60)

revolutions
D=avgvelocity*time=33.3/2 * (36/60)