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Finding the minimum radius

  1. Jan 29, 2008 #1
    1. The problem statement, all variables and given/known data
    An airplane is flying in a horizontal circle at a speed of 100 m/s. The 88.0 kg pilot does not want his centripetal acceleration to exceed 7.00 times free-fall acceleration.
    a) What is the minimum radius of the circular path?

    2. Relevant equations
    v=eπr/t

    a=v2/t
    3. The attempt at a solution

    So i figured out the time using the acceleration equation which was 68.67=100squred/t and for t i got 145.6 s. Then i used that time to solve for radius and got 2318 m which was wrong. The only thing i could think of that i did wrong was something mathematical. Help Please!:)
     
  2. jcsd
  3. Jan 29, 2008 #2

    hage567

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    Homework Helper

    Change the t to an r like we talked about in your other thread and you should be OK.
     
  4. Jan 29, 2008 #3
    so ..145.6 m ?
     
  5. Jan 29, 2008 #4

    hage567

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    Homework Helper

    Looks good to me.
     
  6. Jan 29, 2008 #5
    Thanks!
     
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