A record rotates at a constant velocity of 33rpm. Through what angle will the record rotate.

Question

Physics

Aydin Pennington

27 July, 20:20

A record rotates at a constant velocity of 33rpm. Through what angle will the record rotate.

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Answers (1)

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Wendy Hale · Answer 1

Angle = (angular speed) x (time)

(33 rev/min) x (minutes revving)

= (33 M revs) x (360 degrees/rev)

= 11,880 M degrees in M minutes

Note: it's actually 33 and 1/3 RPM.

100 revs in 3 minutes

If you play an LP record and only spin it at 33 RPM, all the frequencies you hear will be 1.01% lower than what was actually recorded.