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Homework Help: Final problem, need help

  1. Mar 11, 2005 #1
    Final problem, need help!!!!

    A race car, starting from rest, travels around a circular turn of radius 24.5 m. At a certain instant, the car is still accelerating, and its angular speed is 0.521 rad/s. At this time, the total acceleration (centripetal plus tangential) makes an angle of 35.0° with respect to the radius. (The situation is similar to that in Figure 8.15b.) What is the magnitude of the total acceleration?

    I don't know where to start!!!
  2. jcsd
  3. Mar 11, 2005 #2

    Doc Al

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    Staff: Mentor

    Start by calculating the centripetal acceleration. Then figure out what tangential acceleration must be added to the centripetal acceleration to give the net acceleration an angle of 35 degrees. (Draw the vectors.)
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