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Homework Help: Incline, pulley and friction!

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

    The pulley is light and frictionless. Find the mass M1, given that M2 (6.00 kg) is moving downwards and accelerates downwards at 3.61 m/s2, that θ is 30.0°, and that μk is 0.490.

    2. Relevant equations

    F=ma
    F||=mg*cos(theta)
    Fper=mg*sin(theta)

    3. The attempt at a solution

    I have no idea where to start this problem..

    I know how to find F|| and Fperendicular when theres no pulley/no friction.. no idea where to start..



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    Attached Files:

  2. jcsd
  3. Sep 17, 2007 #2

    learningphysics

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    Homework Helper

    Take the freebody diagram of M1... write [tex]\Sigma\vec{F_x} = m\vec{a_x}[/tex] and [tex]\Sigma\vec{F_y} = m\vec{a_y}[/tex] where x is along the plane, and y is perpendicular to the plane.

    similarly write an F=ma equation for M2.
     
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