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Homework Help: Magnitude of force exerted on

  1. Feb 18, 2010 #1
    1. The problem statement, all variables and given/known data
    Three blocks in contact with each other are pushed across a rough horizontal surface by a 91 N force. F---->[2kg] [7.7kg] [10kg]
    If the coefficient of kinetic friction between each of the blocks and the surface is 0.14, find the magnitude of the force exerted on the 7.7 kg block by the 10 kg block.
    Answer in units of N.

    2. Relevant equations
    F = ma
    F = mg
    a = F/M - ug

    3. The attempt at a solution
    from there, I found the acceleration but I am not sure how to find the force exerted on one block by another block.
  2. jcsd
  3. Feb 18, 2010 #2


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    Welcome to PF!

    Hi cmajor! Welcome to PF! :wink:
    Do F = ma on the 10 kg block …

    what do you get? :smile:
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