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Homework Help: Angular Velocity (conceptual)

  1. Nov 15, 2007 #1
    1. How do various distances influence the angular velocity of earth? Tangential velocity? explain

    2. Relevant equations

    3. For some reason, I tend to think that distance doesnt relate, but I do not know where to begin to explain. I also could not find the answer in my physics book.
  2. jcsd
  3. Nov 15, 2007 #2
    Im a little unsure of the question, but...

    Angular velocity has nothing to do with the radius of ( or distance from ) the earth. Its purely how many times something is rotating per unit time.

    Tangential velocity does depend on distance and you need only to think about it. If I want to make one lap around my around a circle of radius R, it would take me t seconds to do it, and you can also visualize the distance covered as a straight line whose length is simply the perimeter of the circle. To run the perimeter of larger and larger circles in the same amount of time ( so you angular velocity would be the same ) you are going to have to run faster and faster to keep up.

    Make sense?
  4. Nov 15, 2007 #3
    Kind of, although im also unsure of exactly what she is asking. My teacher is vague like that.
  5. Nov 15, 2007 #4
    Ironic :wink:
  6. Nov 15, 2007 #5
    Considering my teacher made up the question, I dont see the irony :lol:
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