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Swinging on a vine?

  1. May 7, 2009 #1
    swinging on a vine??

    1. The problem statement, all variables and given/known data

    Consider the example of Tarzan swinging on a vine. Let the length be L = 10 m, and Tarzan
    has a mass of M = 70 kg. The figure shows him swinging through the bottom of the arc,
    where at that instant he has a speed of 13.0 m/s. What is the tension in the vine?

    A. 686 N
    B. 823 N
    C. 1869 N
    D. 1153 N
    E. 1335 N


    3. The attempt at a solution

    is there an easier way to solve this instead of using the angular momentum principle?? if so how??
     

    Attached Files:

    Last edited: May 7, 2009
  2. jcsd
  3. May 7, 2009 #2

    mgb_phys

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    Re: swinging on a vine??

    Draw a diagram listing all the forces.
    hint there are two forces down at the bottom of the arc)
     
  4. May 7, 2009 #3
    Re: swinging on a vine??


    i know there is the F(tension) which points up. and the F(gravity) pointing down.
    F(gravity) = -mg
    but how do you know the F(tension)
     
  5. May 7, 2009 #4
    Re: swinging on a vine??

    never mind i got it. forgot centripital force :)
    thanks
     
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