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Dynamics - Using the coefficient of friction

  1. Oct 13, 2013 #1
    1. The problem statement, all variables and given/known data

    You are to lower a safe of mass 260kg at constant speed downs skids 20.0m long, from a truck 2.0m high.
    a) If the coefficient of friction between the safe and the skids is 0.25, do you need to pull the safe down or hold it back?

    b)How great a force parallel to the skids is needed?

    2. Relevant equations

    F=μN

    3. The attempt at a solution

    Please see image
     

    Attached Files:

  2. jcsd
  3. Oct 13, 2013 #2

    arildno

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    Dearly Missed

    Looks correct.
     
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