#### SpielbergRules

##### New member

- Joined
- Apr 15, 2021

- Messages
- 6

For those who may not have had or used a turntable, they rotate at one of 3 speeds: 33-1/2, 45 or 78 RPM.

I thought the 45 RPM would be the easiest to figure out.

Here's what I came up with so far:

45 RPM is 3/4 or a revolution or 270° per second. Another 1/4 revolution (90° obviously) would be a full revolution.

That's the easy part. Unless I'm wrong.

I'd like to get the frequency (in Hz) required for one full revolution 20 segments @ 18° per segment of the turntable.

I hope I explained this right, I know exactly what I want to do, just not sure how to word it. Also hope I didn't add in more information than needed!

I really would like the formulas / equations to figure it out, not just the answer(s), please.

Thank you!

Mike