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Homework Help: How do you find average value of normal acceleration?

  1. Mar 3, 2012 #1
    1. The problem statement, all variables and given/known data

    Find average value of Normal Acceleration from the information given. (See the picture)

    2. Relevant equations

    [itex]a^{→}_{ave}= Δv^{→}/Δt[/itex]

    [itex]a_{t}[/itex]=Δv/Δt


    3. The attempt at a solution

    I took the difference of the given angles in radians and divided it twice by Δt and get 3.6 rad/[itex]s^{2}[/itex] but the answer was wrong as expected. Please help.
     

    Attached Files:

  2. jcsd
  3. Mar 3, 2012 #2

    tiny-tim

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    hi gikiian! :smile:

    no, rad/s2 is angular acceleration, isn't it?

    you need the normal component of the ordinary (linear) acceleration :wink:
     
  4. Mar 3, 2012 #3
    Hey tiny-tim!

    I have successfully obtained the linear acceleration vector. Would you now like to tell me with respect to what entity should I compute the normal component of it?
     
  5. Mar 3, 2012 #4
    Hey tiny-tim!

    I have successfully obtained the linear acceleration vector. Would you now like to tell me with respect to what entity should I compute the normal component of it?
     
  6. Mar 3, 2012 #5

    tiny-tim

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    my inclination would be to use the direction halfway between the two velocities
     
  7. Mar 4, 2012 #6
    You can'y do that.
     
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