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Homework Help: Circular Motion Problems

  1. Sep 24, 2012 #1
    1. ______ stands on the Earth's equator. Calculate his tangential speed. The Earth has a radius of 6.38 x 10^6 m. What is ______ centripetal acceleration?

    2. 2∏r/T (Circumference/Time) and V2(squared)/r. (Velocity Squared/Radius)

    I don't even know how to start this problem.
  2. jcsd
  3. Sep 24, 2012 #2
    How fast does the earth rotate on its axis? That defines the speed which must be expressed in radians per unit time. Do you know what a radian is?
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