1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Circular motion ='( and Tension

  1. Nov 17, 2006 #1
    Tarzan (m=85kg) tries to cross a river by swiming from 10.0m long vine. His speed at the bottom of the swing, just as he clears the water, is 8.0m/s. Tarzan doesnt know that the vine has a breaking strength of 1.0*10^3 N. Does he make it safely across the river?

    mass= 85kg
    rope= 10m
    velocity= 8.0m/s
    Tension= 1.0*10^3N
    and it has to do with this equation somehow

    Fc(force that maintains circular motion)
    mass (m)
    Vt^2 (tangential speed)^2
    r (distance to axis)
    w (angular speed)

    Fc=m*((Vt^2)/r) or Fc=m*r*(w)^2

    I know the answer is no but i dont know how to get there
    well thanks again
  2. jcsd
  3. Nov 17, 2006 #2
    While you have a centripetal force, I think you are missing the force from his weight.
  4. Nov 17, 2006 #3


    User Avatar
    Homework Helper

    Physics girl phd is right, you have to count the weight in, and, by the way, by typing 'Tarzan' into the search box, I'm sure you'll find at least two very similar (if not same) problems.
  5. Nov 17, 2006 #4


    User Avatar

    This isn't advanced physics.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Circular motion ='( and Tension
  1. Circular motion (Replies: 34)