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Pulling a boat (net work)

  1. Sep 28, 2006 #1
    http://img517.imageshack.us/img517/6533/c6p4ty2.jpg [Broken]

    The drawing shows a boat being pulled by two locomotives through a canal of length 1.04 km. The tension in each cable is 4.27 x 103 N, and theta = 20.0o. what is the net work done on the boat by the two locomotives?

    Here is what I've done so far:


    W=2* [4.27*10^3 (1.04) (cos20) ]


    What am I doing wrong here? thanks
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Sep 28, 2006 #2

    Doc Al

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    Staff: Mentor

    The distance is given in km--convert to meters.
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