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Homework Help: Newtons laws with friction

  1. Sep 29, 2009 #1
    1. The problem statement, all variables and given/known data

    In figure 6-36, two blocks are connected over a pulley. The mass of block A is mA and the coeffcient of kinetic friction between A and the incline is Uk. Angle of the incline is theta. Block A slides down the incline at constant speed. What is the mass of block B? Express your answer in terms of the variables given.

    http://img121.imageshack.us/img121/9748/fig636.gif [Broken]

    2. Relevant equations

    F = ma

    3. The attempt at a solution

    Taking acceleration to be 0, because speed is constant. And that T1 = T2, i came to the answer of

    [m1gsin(theta) - m1gcos(theta)Uk] / g = mass of the 2nd block

    Can I get a verification
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Sep 29, 2009 #2
    Yes, that is correct.
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