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Homework Help: Find the mass of M1 and M2

  1. Oct 10, 2008 #1
    1. The problem statement, all variables and given/known data

    The figure (Intro 1 figure) shows an acceleration-versus-force graph for three objects pulled by rubber bands. The mass of object 2 is 0.150 kg. What are the masses of objects 1 and 3?
    (I've attached the figure.....hopefully it will show up)




    2. Relevant equations
    F=ma


    3. The attempt at a solution
    I'm super lost on this one...could use all the help I can get!
     

    Attached Files:

  2. jcsd
  3. Oct 10, 2008 #2

    LowlyPion

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    Homework Helper

    F = M*a

    This means that

    [tex] F_{(a)} = m * a[/tex]

    That means that the slope of the F is the mass as in

    [tex] \frac{dF_{(a)}}{da} = m * \frac{da}{da} = m[/tex]

    So if the slope of 2 is given as .15 kg and on the graph it has a slope of ...?
    Then the slope of 1 and 3 compared to 2 should reflect their masses.
     
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