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Hanging mass question

  1. Nov 6, 2009 #1
    1. The problem statement, all variables and given/known data
    what determines the direction of acceleration assuming no friction of a hanging mass that is attached to two other masses? how do we calculate the net force of the system? Do we use the heaviest mass?


    2. Relevant equations
    fnet=ma


    3. The attempt at a solution
    i don't know...
     
  2. jcsd
  3. Nov 6, 2009 #2
    The masses are attached HOW? what are their positions? Is acceleration caused by gravity or are there ohter forces? I really don't know what's going on here.
     
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