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Homework Help: Potential Energy and upper limits

  1. Apr 7, 2010 #1
    1. The problem statement, all variables and given/known data

    A particle of mass m = 3.0 kg moves along the x axis through a region in which its potential energy U(x) varies as shown in the Figure. When the particle is at x = 8.5 m, its velocity is 2.273 m/s.


    http://i118.photobucket.com/albums/o95/blazinlyfe42/phys.gif [Broken]

    A.) What is the magnitude of the force that acts on the particle at this position?

    B.) The particle will move in a limited region along the x axis. What is the lower limit of this region?

    C.) What is the upper limit of this region?

    D.) What is its speed at x = 14.0 m ?
    2. Relevant equations



    3. The attempt at a solution

    I honestly dont know where to begin
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 7, 2010 #2

    collinsmark

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    Homework Helper
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    Hello umdece4,

    Welcome to Physics Forums!

    Start by stating some relevant equations. Do you know of an equation which gives a relationship between energy and force (where energy might be in the form of potential energy, kinetic energy, or work. Distance might be involved in this equation too :wink:)?

    "Conservation of energy" law could help in this problem as well.
     
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