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A pulley and a wedge questions.

  1. Aug 4, 2006 #1
    from the attachment, i need to answer question 2.15c and 2.16.

    here is what i did with the questions:

    in the first question i got the next set of equations, which apparently are incorrect cause i didnt get the answer from the book:
    T-uM1g=M1a
    uM2g-T=M2a
    M3g-T'=M3a'
    T'=2T
    2a'=a
    wher a' is the accleration of mass M3 and a is of the other two, T' is the tension on M3 and T is the tension on the other two.

    for the second question i got the next set of equations, which is also incorrect cause they for accelration with the respect to the y direction:
    Nsin45=mg
    mA+Ncos45=ma

    thanks in advance.
     
  2. jcsd
  3. Aug 4, 2006 #2

    Doc Al

    User Avatar

    Staff: Mentor

    You forgot the attachment.
     
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