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Homework Help: Basic Physics Dynamics Problem

  1. Oct 15, 2011 #1
    1. The problem statement, all variables and given/known data
    If mu = 0.2 find the maximum angle before slipping occurs
    Diagram: A ramp in the shape of a right triangle that is 30 degrees above the horizontal. A mass is on the ramp and tied to it is a string that runs around the ramp to the vertical side of the ramp where another mass is held in the air.

    2. Relevant equations
    F(net)=ma
    F(friction)=(mu)*(Normal Force)

    3. The attempt at a solution
    F(friction) = 0.2*(Normal Force)
    F(net) = 0
    F(friction)-(Fgravitytan(theta))=0
    0.2F(gravity) - (Fgravitytan(theta)) = 0
     
  2. jcsd
  3. Oct 16, 2011 #2
    Do you have something like this?
     

    Attached Files:

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