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Angular Velocity of LP record

  1. Oct 29, 2011 #1
    1. The problem statement, all variables and given/known data

    The once-popular LP (long-play) records were 12 inches in diameter and turned at a constant 33(1/3) rpm.
    Find the angular speed of the LP in rad/s and its period in seconds.


    2. Relevant equations

    1 rpm=((2∏)/60)

    3. The attempt at a solution

    for ω i got 3.49

    I need help with finding its period in seconds, T.
     
  2. jcsd
  3. Oct 29, 2011 #2
    [itex]ω=2π/T[/itex]

    One of the basic equations of circular motion, well worth knowing!
     
  4. Oct 29, 2011 #3
    thank you. could you please let me know if my omega is correct. I just want to make sure. for T i got 1.80
     
  5. Oct 29, 2011 #4
    Unless we both made some horrible mistake!
     
  6. Oct 29, 2011 #5
    yayy! thanks! on to the next...
     
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