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Homework Help: Tractor on an incline

  1. Nov 23, 2008 #1
    The problem states that a 3900kg trailer is pulled by a tractor up a 16 degree incline with a steady speed of 3.0m\s.

    I am asked what force the tractor exerts on the trailer.

    I said that the force was equal to the (W)(sin)16degrees, i get the right answer in the back of the book but i think its a coincidence....any help on this one would be much appreciated
  2. jcsd
  3. Nov 23, 2008 #2
    me again! Your answer is right. Because you're not accelerating the trailer up the incline, there is no additional force required. All you need to do to maintain the speed of 3ms-1 is to overcome the backward force down the slope.
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