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Homework Help: Physics Hwk Problem: Centripetal Acceleration

  1. Oct 24, 2004 #1
    A ceiling fan has two different angular speed settings: w1 = 485 rev/min and w2 = 120 rev/min. What is the ratio (a1/a2) of the centripetal accelerations of a given point on a fan blade?

    How would I go about solving this problem?
  2. jcsd
  3. Oct 24, 2004 #2

    Doc Al

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    Staff: Mentor

    What's the formula for centripetal acceleration? Hint: Find the formula for centripetal acceleration in terms of angular speed ([itex]\omega[/itex]).
  4. Oct 24, 2004 #3
    Physics hwk problem: Centripetal Acceleration

    I used the equation: w^2=a/r. I found the angular speed, but i don't know what the radius is.
  5. Oct 24, 2004 #4


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    The radius will not change between the two speed settings.
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