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Homework Help: Question about Tension

  1. Sep 14, 2008 #1
    1. The problem statement, all variables and given/known data
    http://pyrofool.googlepages.com/lab2.gif [Broken]

    Three blocks on a horizontal frictionless table are connected with strings as shown below. The three blocks are pulled to the right with a force T3 = 60N. If m1 = 10kg, m2 = 20kg, and m3 = 30kg, find the tensions T1 and T2.

    2. Relevant equations

    FBD and F=ma

    3. The attempt at a solution

    I'm just wondering if these are the correct answers. If not could someone explain why, and how I would find the correct answers. Thanks

    T1= 10N
    T2= 30N
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Sep 14, 2008 #2


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    Homework Helper

    they're okay.

    this was assigned so you'd see that tensions "within the system" can be ignored,
    while tensions that are "cut by the system boundary" can actually be solved for.
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