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Homework Help: Change in magnitude of radial acceleration

  1. Jan 20, 2013 #1
    1. The problem statement, all variables and given/known data

    A wheel changes its angular velocity with a constant angular acceleration while rotating about a fixed axis through its center. Show that the change in the magnitude of the radial acceleration during any time interval of a point on the wheel is twice the product of the angular acceleration, the angular displacement, and the perpendicular distance of the point from the axis.

    2. Relevant equations

    $$a_r=\omega^2 r$$

    3. The attempt at a solution

    I really don't know. Please help.
  2. jcsd
  3. Jan 20, 2013 #2
    Got it, never mind.
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