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Homework Help: Calculate the work done

  1. Sep 16, 2007 #1
    1. The problem statement, all variables and given/known data

    Two tugs pull a tanker. Each at a force 1400000N with one at an angle 14degrees west of north, the other 14degrees east of north. They pull the tanker 0.66km north.

    2. Relevant equations


    3. The attempt at a solution

    I simply took the vector force of 1 tanker

    1400000Cos(14) = 1358414N multiplied it by two for both tugs = 2716828

    Therefore W (asked in 3 sig figs) = 2716828*0.66 = 1.79*10^6Nm

    Unfortunately I'm told this is wrong :frown:

    Appreciate any help!
    Last edited: Sep 16, 2007
  2. jcsd
  3. Sep 16, 2007 #2

    Doc Al

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    Staff: Mentor

    You forgot the distance!
  4. Sep 16, 2007 #3

    Look at your units.
  5. Sep 16, 2007 #4

    Doc Al

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    Staff: Mentor

    OK... you put in the distance (good!), but the distance is measured in km, not meters.
  6. Sep 16, 2007 #5
    Good ol MKS

    Thanks for that :)
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