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Help equilibrium

  1. Jan 2, 2005 #1

    i need your help... :cry:


    you and your friend are supposed to carry a crate up a flight of stairs. The crate may be assumed uniform and that its bottom side is parallel to the slope of the stairs. if the forces that you and your friend exert are vertical, which is the better position to support, upper or lower end? why? :confused:
  2. jcsd
  3. Jan 2, 2005 #2
    Apply the equilibrium of momenta in the baricenter of the crate. In most cases, the lower position bears the higher load. (BTW, you miss one parameter, can you tell which?)

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