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Torque, Equilibrium, and Center of Mass

  1. Feb 23, 2008 #1
    1. The problem statement, all variables and given/known data
    While standing on a long board resting on a scaffold, a 70 kg painter paints the side of a house. If the mass of the board is 15 kg, how close to end can the painter stand without tipping the board over?

    2. Relevant equations
    [tex]\tau[/tex]painter = [tex]\tau[/tex]board

    3. The attempt at a solution
    [tex]\tau[/tex]painter = [tex]\tau[/tex]board
    (rpainter) (70kg) = (1.5 m) (15kg)
    70r = 22.5
    r=.32 ft.

    the answer was 1.2 m from left end of board.
  2. jcsd
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