Arecord rotates on a turntable at 33 rpm. you may want to review (pages 190 - 194) . part a what is the angular speed in rad/s?

1) 1 rpm corresponds to 1 revolution per minute. Since 1 minute = 60 seconds, 33 rpm are equal to 

So, 0.55 revolutions per second.

2) 1 revolution corresponds to , which is equal to  radians. So we can write the following proportion:

and from this we can find x, the angular speed in rad/s:

You get 6 for mechanical