What is the angular speed of a grindstone spinning at 8.3 rev/s?

[ftth]

Anyone know a name of a book that has question "A grindstone spinning at the rate of 8.3rev/s has what approximate angular speed?"

 

[Chi Meson]

Why do you need to find this book? This is a basic question, anyone could have made this up on the fly.

 

[pooface]

angular speed = 2pi(f)
f = rev/s

 

[berkeman]

Only 3 hits from google -- two from here on the PF, and one from an exam:

http://astro1.panet.utoledo.edu/~dshvydka/Midterm%20Exam%202.htm