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Torque and Static Equilibrium

  1. Feb 26, 2012 #1
    1. The problem statement, all variables and given/known data
    A .110-kg remote control 21.0cm long rests on a table, with a length L overhanging its edge. To operate the power button on this remote requires a force of .365N. How far can the remote control extend beyond the edge of the table and still not tip over when you press the power button? Assume th3e mass of the remote is distributed uniformly, and that the power button is on the end of the remote overhanging the table.


    2. Relevant equations
    No idea.


    3. The attempt at a solution
    None
     
  2. jcsd
  3. Feb 26, 2012 #2
    Take moment about the edge of the table.
    No net moment in equilibrium, i.e.
    clockwise moment = anticlockwise moment
     
  4. Feb 26, 2012 #3
    What moment? Moment of inertia?
     
  5. Feb 26, 2012 #4
    [itex]\tau[/itex] = Fd[itex]_{\bot}[/itex]
    where d[itex]_{\bot}[/itex] is the perpendicular distance between the pivot (edge of the table) and the force
     
  6. Feb 26, 2012 #5
    So how would I set up the equations?
     
  7. Feb 26, 2012 #6
    http://www.greenandwhite.net/~th4450/phy2.png

    Clockwise moment = W·d
    Anticlockwise moment = F·d
     
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