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Homework Help: Find the change in potential energy of the system

  1. Oct 19, 2005 #1
    I'm having a had time with this problem because it is using A's and B's instead of real numbers:

    A single conservative force acting on a particle varies as F=(-Ax+Bx^2)i N, where A and B are constants and x is in meters. a)calculate the potential energy function U(x) associated with this force, taking U=0 at x=0. b) Find the change in potential energy of the system and the change in kinetic energy of the particle as it moves from x=2.00m to x=3.00m

    Any help is greatly appreciated! Thanks!
     
  2. jcsd
  3. Oct 19, 2005 #2
    All you need is the relationship between the force function F(x) and the energy function U(x) given by
    [tex] U(x) = \int_{x_1}^{x_2} F(x) \ dx [/tex]

    Remember A and B are constants, so treat them as such while integrating. (They wont disappear).
     
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