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Homework Help: Centripetal acceleration of Neutron stars

  1. Oct 3, 2006 #1
    Neutron stars represent the final stage of life for some massive stars. Typically, they have radii of 10 km. Determine the magnitude of the centripetal acceleration for a piece of neutron star matter on the star surface at the equator (so the matter moves in a circle of radius 10km). Assume the neutron star rotates once every .003 seconds.

    This is what I did.

    a = w^2 * r
    a = (2pi/.003)^2 * (10)
    a = 4.38 x 10^7 m/s^2

    The answer key tells me that the acceleration is 4.37 x 10^10 m/s^2. Where did I go wrong?
  2. jcsd
  3. Oct 3, 2006 #2
    remember to convert everything into SI units. You used 10km when you should have used 1000m :p
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