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Maximum speed Tarzan can tolerate

  1. Mar 1, 2010 #1
    1. The problem statement, all variables and given/known data

    Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. If his arms are capable of exerting a force of 1.4x10^3 N on the vine, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 80kg and the vine is 4.8m long.

    2. Relevant equations


    3. The attempt at a solution

    I used the second equation to find v and ended up with 42,202 m/s, which seems way too high. I'm doubting this was the right equation to use since I didn't insert mass, and I'm not sure if 4.8m is the radius.
  2. jcsd
  3. Mar 1, 2010 #2
    Nevermind, I redid the problem and it makes much more sense now.
    I used f=ma, then a= F/m and got a= 17.5m/s^2. Then I used a=v^2/r and got v= 9.17m/s.
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