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Homework Help: Block pulled along floor

  1. Sep 17, 2012 #1

    omc1

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    1. The problem statement, all variables and given/known dataA block of mass 6.7 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of 56.0 N at an angle 27.9o above the horizontal. What is the magnitude of the acceleration of the block?

    2. Relevant equations f=ma



    3. The attempt at a solution i split my x and y coordinates and got x and y accelerations then used c^2=a^2+b^2 to find the magnitude of the acceleration and got 8.63m/s^2 but iam getting it wrong, please help thanks
     
    omc1, Sep 17, 2012
  2. jcsd
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  3. Sep 17, 2012 #2

    jldibble

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    You only needed to find the x component of force and use F=ma to get the acceleration in the horizontal direction. The horizontal acceleration is the acceleration you're looking for.
     
    jldibble, Sep 17, 2012
  4. Sep 17, 2012 #3

    estro

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    Show how you wrote your net forces along x and y.
    Is it possible to have acceleration along y?
     
    estro, Sep 17, 2012
  5. Sep 17, 2012 #4

    omc1

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    oh ic now the acceleration in the y direction is zero. ok thanks!
     
    omc1, Sep 17, 2012
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