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With what acceleration 2m will move?

  1. Apr 14, 2015 #1
    1. The problem statement, all variables and given/known data
    A system of pulleys is given. I need to find with what acceleration mass m2 will move.
    Untitled.png

    2. Relevant equations
    Newton's laws of motion.

    3. The attempt at a solution
    uzduotis.jpg

    Is it right?
     
  2. jcsd
  3. Apr 14, 2015 #2

    robphy

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    As a check, plug in your result of a=-g back into your Newton-Law equations to get expressions for T1 and for T2.
    Are those results consistent with what you claim about how T1 and T2 are related?

    Are the a's the same for the two objects? Can you justify your answer?
     
  4. Apr 14, 2015 #3
    I thing it's incorrect. How should I solve it?
     
  5. Apr 14, 2015 #4

    SammyS

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    What is the complete statement of the problem?

    Can we ignore the rotational inertia of the pulleys? How about the mass of the pulleys? It looks as if one of them has mass, m .
     
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