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Homework Help: Help with finding missing quantities on Free-Body Diagrams

  1. Oct 28, 2012 #1
    1. The problem statement, all variables and given/known data
    Fill in the missing quantity for the following:

    V = constant
    FNet = ?
    a = ?
    F1 = ?

    2. Relevant equations
    FNet = Fn - Fg + Fa - FF
    Fg = mg
    FNet = ma

    3. The attempt at a solution
    Because I honestly do not know how to go about solving this, the only things I've done are review class notes and consult the textbook, both of which have left me empty-handed.
  2. jcsd
  3. Oct 28, 2012 #2


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    Gold Member

    The diagram is rather crude, but I'll assume:
    - all force lines are supposed to have arrows pointing away from the block
    - all force lines are parallel
    - the body is not accelerating
    If the body is not accelerating, what do you know about the (vectorial) sum of the forces acting on it?
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