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Homework Help: Pulling masses in different ways on a rough surface

  1. Sep 12, 2016 #1
    1. The problem statement, all variables and given/known data
    The coefficient of friction between the each mass and the floor are μM and μm respectively. which system accelerates faster under the same F in case:
    1) μM = μm
    2) μM < μm
    3) μM > μm

    2. Relevant equations
    Friction force: ##f=mg\mu##

    3. The attempt at a solution
    1) Both systems accelerate the same. case A:
    Case B:
    2)The acceleration is bigger since the net force available for accelerating is bigger. the left side of the inequality corresponds to A:
    3)The in verse of 2.
  2. jcsd
  3. Sep 12, 2016 #2


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    Helllo Karol,

    And what is it you need assistance with ?
  4. Sep 12, 2016 #3
    Nothing.... i thank you BvU
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