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Homework Help: Angle at angular acceleration

  1. Dec 2, 2015 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations
    αt = r α

    3. The attempt at a solution
    ωi = 0 rad/s
    αt = 2.00 rad/s2
    r = 112 m
    θ = ? at a = 6.80 m/s2

    I'm not exactly sure where to begin. Help is appreciated.
  2. jcsd
  3. Dec 2, 2015 #2
    You have two kinds of acceleration here. Assuming the batmobile doesn't slip on the road as it's turning (radius being a constant), the two accelerations are perpendicular (one is tangential, and the other is radial (centripetal force). So you can add them like: aTotal^2 = aTang^2 + aRad^2.
    One top of that, the radial acceleration is dependent on the tangential speed, so it's dependent on tangential acceleration.
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