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Equilibrium Torque help needed

  1. Nov 19, 2005 #1
    Im having trouble with torque and equilibrium (independant study unit) and i was wondering if anything woudl be willing to help me with a few text book problems that i just cant solve:
    1.
    image of problem : http://www.imagedump.com/index.cgi?pick=get&tp=347420
    a uniform 1000kg steel girder is supported by the endpoints A and B
    What are the upward forces of these end points
    Basicaly what i think needs to be done is set up a point of rotation lets say at support B. then the 2 forces of G pushing down have to equal to the force of A pushing up correct?
    i just dont rly understand torque that well
    For the force of A would it be ?
    F x 32m = (9.8 x 1000kg) x 16m ) + (9.8 x 2500kg) x 24m)
    16m bieng the distance to the center of the steel girder (Fg) and 24m bieng the distance to the middle of the container (fg)
    thanks for the help :)
     
    Last edited by a moderator: Nov 19, 2005
  2. jcsd
  3. Nov 19, 2005 #2

    Fermat

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    Yes, everything that you've done is correct.
     
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