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Work problem

  1. Apr 17, 2006 #1
    An object of mass 2 kg is repelled from the origin by a force in the +x-direction whose magnitude varies with x according to F=(7Nxm^2)x^-2. How much work is done by this force when the object moves from x=2 to x=3? (Be sure to say whether this work is positive or negative.)

    I have no idea how to start this problem off. Anybody want to help me out?
  2. jcsd
  3. Apr 17, 2006 #2


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    Staff: Mentor

    What is the equation that defines how much work is done, in terms of the force and distance through which the force acts? Work is the integral of what quantities?
  4. Apr 18, 2006 #3


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    Staff Emeritus
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    Gold Member

    You really should look through the link I gave you on the other thread.
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