Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Centripetal Acceleration

  1. Jan 14, 2010 #1
    A ceiling fan is turning at a rate of 100 revolutions per minute. A spider is clinging to a blade. If he experiences a centripetal acc greater than 0.3g, he wil lose his grip and be flung off. How far from the centre can he safely go?

    I used: T = 60/100 = 0.6

    angular velocity = 2pi/T = 10pi/3

    a = (10pi/3)^2 * radius

    using a = 0.3g

    i get radius = 0.0268...

    But the answer is 1.05m?
  2. jcsd
  3. Jan 14, 2010 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Your answer looks right to me.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook