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Word Problem (Work)

  1. Nov 1, 2011 #1
    Tarzan, who weighs 875 N, swings from a vine through
    the jungle. How much work is done by the tension in the
    vine as he drops through a vertical distance of 4.00 m?

    The answer is zero.

    Why is this?
     
  2. jcsd
  3. Nov 1, 2011 #2

    PhanthomJay

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    You might want to draw a sketch of King of the Jungle as he swings from a long vine. At some point he is 4 m vertically lower than his starting point. The tension force in the vine is always perpendicular to his displacement vector at any instant. What is the definition of work?
     
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