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Homework Help: Ramp and Pulley Question

  1. Oct 13, 2007 #1
    1. The problem statement, all variables and given/known data
    m1 = ?, m2 = 2kg, Us = 0.80, Uk = 0.50, slope = 20º. What will the minimum mass be for it to stick and not slip??

    2. Relevant equations

    fx = mgsin0 - uFn = 0

    3. The attempt at a solution

    Hey guys/gals... i've been doing this stupid question for the whole night and I'm stuck... I was wondering if u guys can figure it out for me... thanks a bunch...

    Figure = http://session.masteringphysics.com/...gure_08_36.jpg [Broken]

    Figure shows a block of mass m resting on a 20 degree slope. The block has coefficients of friction (u.s) =0.80 and (u.k) =0.50 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.0 kg. What is the minimum mass that will stick and not slip?
    Last edited by a moderator: May 3, 2017
  2. jcsd
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