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Homework Help: Centripital Acceleration question

  1. Jan 25, 2005 #1
    A mass on the end of a 1.07 m string moves at 2.64 revolutions per second. What is the magnitude of the centripetal acceleration in m/s/s?

    How would I go about solving that? What really confuses me is the 2.64 revolutions per second, so if anyone could explain that I'd appreciate it. I have the Centriptial Acceleration formula but I dont know how to use Rev/s.
  2. jcsd
  3. Jan 25, 2005 #2


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    Homework Helper

    I presume you know the formula [tex] a = - r\omega^2[/tex] ?

    [itex]\omega = 2\pi f[/itex] where [itex]f[/itex] is the frequency in Hertz, or number of revolutions per second.
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