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Homework Help: Harmonic motion and a particle

  1. Apr 29, 2010 #1
    1. The problem statement, all variables and given/known data

    A particle on a spring moves in simple harmonic motion along the x axis between turning points at x1 = 100cm and x2 = 140cm.

    [1] at which of the following positions does the particle have max speed?
    100cm, 110cm, 120cm, some other position, or same greatest value occurs at multiple points?

    .... the questions move on to max acceleration, max net force, and such

    2. Relevant equations

    3. The attempt at a solution

    I know the max speed occurs at x = 0, and when the motion reachs +- A, i know accerleation and net force are max.

    But I don't get the question, please help me explain this
    between turning points at x1 = 100cm and x2 = 140cm

    let say I have a simple harmonic motion x in the y-axis, t in the x-axis.

  2. jcsd
  3. Apr 30, 2010 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    The question is asking for the equilibrium position of the mass. In this example the origin of the x coordinates is not at the same position as the equilibrium position. What value of x in centimetres is the equilibrium point?
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