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Homework Help: Two blocks on a double incline plane

  1. Sep 18, 2010 #1
    1. The problem statement, all variables and given/known data
    See attachment


    2. Relevant equations
    F=MA
    T=MA?



    3. The attempt at a solution
    M1:
    N1=M1gSin(32)
    T=M1gCos(32)

    Now does this work?:
    T=MA
    M1A=M1gCos(32)

    and that would give me the acceleration for the X-axis and i could do the same for the Y-axis and get the magnitude?
     

    Attached Files:

  2. jcsd
  3. Sep 18, 2010 #2
    Let the block M2 move down the plane and 'a' be its acceleration along the plane.
    The forces acting on it are-
    1)the normal force by the plane (perpendicular to the plane)
    2)its weight vertically downwards
    3)tension in the string

    Forces perpendicular to the plane balance each other.
    Forces along the plane are responsible for its acceleration.
    No need to calculate separate components of acceleration for x and y axes respectively.
    Just calculate its net acceleration along the plane.
     
  4. Sep 18, 2010 #3
    Thank you very much!
    Doing that ill set up T-Mgsin32=ma and ill do the same for m2 and solve for acceleration
     
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