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Homework Help: Applying Newton's Laws of Motion

  1. Oct 17, 2007 #1
    1. The problem statement, all variables and given/known data

    Blocks X and Y of masses mx=5.12kg and my=3.22kg are connected by a fishing line passing over a frictionless pulley. Show that block X slides up the incline (35.7 degrees above the horizontal) with positive acceleration. Determine the magnitude of the acceleration. (0.273m/s2 is the answer)

    2. Relevant equations

    Ftension-Fg=Fnet=m total x a system
    Fg=mg (Block Y)

    3. The attempt at a solution

    I want to find the Ftx= and FAy but i do not know the Ftens. I can calculate the gravitational force of Block Y, which is F=mg=31.6N. now i am trying to figure out how to calculate the net force which will give me acceleration, using the combined mass of the two blocks. What is confusing me is the incline and the fact that no tension force is given.
  2. jcsd
  3. Oct 17, 2007 #2
    please help me understand the situation at least! thx
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