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Homework Help: Kinematics homework help

  1. Jul 4, 2005 #1
    A grinding wheel (radius 7.6cm) is rotating at 1750 rpm.
    (a) What i the speed of a point on the outer edge of the wheel?
    (b)What is the centripetal acceleration of the point?

    I do this question in this way:

    (a) f= 1750rpm = 29.167rps => T= 1/f = 0.03428

    v= (2"pie"r) / T
    = 13.93
    (sorry...I dont know how to key in "pie", can anyone teach me?)

    (b) a = (v^2) / r
    = 2553.2

    Am I right?
  2. jcsd
  3. Jul 4, 2005 #2
    Last edited: Jul 4, 2005
  4. Jul 4, 2005 #3
    without using TEX, u can also create the symbol π by typing "&" then "pi" then ";" (semicolon) like this: π
    Last edited: Jul 4, 2005
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