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<motion Problem >

  1. Jan 6, 2008 #1
    A particle moves along positive x-axis.It is a acted upon by a force=k*1/2x^2 ,where x is the coordinate of particle in metre.At t=0 its x=1 and velocity=0.find::

    1.The velocity at x=0.5m
    2.Time at which particle reaches 0.25m

    DID TRY A BIT..GOT THE ANSWER BUT AM NOT SATISFIED WITH MY SOLUTION.

    THANKS A MILLION FOR ANY HELP>>>
     
    Last edited: Jan 7, 2008
  2. jcsd
  3. Jan 6, 2008 #2

    Doc Al

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    Staff: Mentor

    Show your solution and why you aren't satisfied with it.
     
  4. Jan 7, 2008 #3
    i forgot to provide the mass>>>.01 kg
    constant k=.01 n/m

    i integrated the force over the displacement x= 1 to x=0.5
    this gave me the work done..

    now i know work done= change in k.e.
    >>w = 1mv^2/2
    i calculated velocity using this and got the answer..

    i am confused how to proceed in the next part..

    P.S: my ques are not hw ques.. ..i am solving these just to increase my knowlege.
     
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