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Tension problem

  1. Oct 11, 2005 #1
    Let T1 be the pull on the last car of the train
    I tried to solve this problem by calculate the acceleration first. I used this equation F=ma a=F/M = (1000N)/(6000kg+850kg+1700kg)
    And then I used T1-f = ma T
    1-680n = 850kg x a from the above answer

    But I didn't get the answer. Can anyone point out my mistake? thx so much!
     
  2. jcsd
  3. Oct 11, 2005 #2

    Chronos

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  4. Oct 11, 2005 #3

    Diane_

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    Think about the physics of the problem. Would friction add to or subtract from the pull on the last car?
     
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