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Find the displacement of the springs

  1. Dec 4, 2009 #1
    A question:Simple harmonic motion

    http://capa2.cc.huji.ac.il/res/msu/physicslib/msuphysicslib/09_Force_and_Motion/graphics/prob07_twospring.gif1.[/URL] The problem statement, all variables and given/known data
    Two springs with spring constants k1=29.7 N/m and k2=20.7 N/m are connected as shown in the figure:
    Find the displacement, y, of the connection point from its initial equilibrium position when the two springs are stretched a distance d = 1.10 m as a result of the application of the force F

    http://capa2.cc.huji.ac.il/res/msu/physicslib/msuphysicslib/09_Force_and_Motion/graphics/prob07_twospring


    2. Relevant equations
    Hooks law: F=Kx



    3. The attempt at a solution
    since the same the same force streches each spring :
    k1.x=k2.x
    FROM HERE I STUCKED
    ANY HINT?
     
    Last edited by a moderator: Apr 24, 2017
  2. jcsd
  3. Dec 4, 2009 #2
    i tried to figure this question out:
    F=(l1+1.10)29.7
    F=(l1+y+1.10)20.7
    y=9
    but its not correct
    any help?
     
  4. Dec 4, 2009 #3

    Redbelly98

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    What figure?
     
  5. Dec 4, 2009 #4
    http://capa2.cc.huji.ac.il/res/msu/physicslib/msuphysicslib/09_Force_and_Motion/graphics/prob07_twospring.gif
     
    Last edited by a moderator: Apr 24, 2017
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