Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: How much work do you do?

  1. Mar 24, 2005 #1
    Please help with this question...whatever answer I put in is wrong.

    An object is attracted toward the origin with a force given by
    F_x = - k / x^{2}. (Gravitational and electrical forces have this distance dependence.)

    The only other force acting on the object is a force that you exert with your hand to move the object slowly from x_1 to x_2. How much work do you do?

    I know the work of the force of the object is k/x_2 - k/x_1, after you integrate it. But this is the work done by the force exerted with your hand and I'm getting confused. Any help would be very much appreciated. :)
  2. jcsd
  3. Mar 24, 2005 #2
    We recently had a question that seems to be exactly the same. Have a look at it in this thread. Hope that it helps you.
  4. Mar 24, 2005 #3
    Yup...the person must be doing the same unit of study as me...lol. Stupid assignment...thank you so much. :)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook