How Do You Calculate Equilibrium Torque for a Supported Girder?

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    Equilibrium Torque
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To calculate equilibrium torque for a supported girder, establish a point of rotation at one support, such as point B. The downward forces acting on the girder must equal the upward force at point A. The equation involves the distances from the point of rotation to the center of mass of the girder and any additional weights. The upward force at A can be determined using the formula that balances the torques. Understanding these principles is essential for solving torque-related problems in physics.
Ineedofhelp
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 textbook problems that i just can't 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 let's 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 don't 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 :)
 
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Yes, everything that you've done is correct.
 
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