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Swinging on a rope

  1. Nov 7, 2013 #1
    1. The problem statement, all variables and given/known data

    A man is trying to swing from a 15 m high cliff on a 12 m long rope. (the rope is horizontal at the start) He lets go when the rope is 30° degrees from the horizontal of the other side. (totaled swung angle is 150°.

    How far does he go from the cliff?

    2. Relevant equations
    I suppose you would use a circle tangentle speed formula, not too sure.



    3. The attempt at a solution

    The first part of the problem to calculate the speed of of the launch is where i am having trouble.

    ___& --------------O
    |
    |
    | *X* is where here he lets go X (30°)
    |________________________________________________x__________x_____x_ Where
    does he land, how far from the cliff.

    Circle Radius = r = 12 m
     
  2. jcsd
  3. Nov 8, 2013 #2

    haruspex

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    What conservation laws might help?
     
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