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Homework Help: Compare Mass-Pulley Frictionless Slope

  1. Oct 21, 2012 #1
    1. The problem statement, all variables and given/known data
    If the left-hand slope in the figure makes a 60 degree angle with the horizontal, and the right-hand slope makes a 30 degree angle, how should the masses compare if the objects are not to slide along the frictionless slopes?

    Express your answer using two significant figures.

    2. Relevant equations

    besides degrees of the angles, I am stuck on how to go about the problem. Any hints is appreciated. =]

    3. The attempt at a solution


    Added both F.B.D:

    Last edited: Oct 21, 2012
  2. jcsd
  3. Oct 21, 2012 #2
    Draw a free body diagram for each block.
  4. Oct 21, 2012 #3
    Okay They are added. May you take a look and see if I am in the right direction?
  5. Oct 21, 2012 #4
    Close, rewrite the forces in terms of their components parallel to and perpendicular to the slope. This leaves the normal forces only in the perpendicular directions, and the tension only in the parallel direction.
  6. Oct 21, 2012 #5
    oh okay I think I know what to fix. Thanks!
  7. Oct 21, 2012 #6
    You're welcome.
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