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When an old LP turntable was revolving at 33 1/3 rpm, it was shut off and...

When an old LP turntable was revolving at 33 1/3 rpm, it was shut off and uniformly slowed down and stopped in 5.5 seconds.

(a) What was the magnitude of its angular acceleration (in rad/s2) as it slowed down?

(b) Through how many revolutions did it turn while stopping?

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