How Do You Calculate Equilibrium Torque for a Supported Girder?

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SUMMARY

The discussion focuses on calculating equilibrium torque for a supported girder, specifically a uniform 1000kg steel girder supported at endpoints A and B. The participant seeks assistance in determining the upward forces at these endpoints using torque principles. The correct approach involves setting a point of rotation at support B and ensuring that the sum of the moments around this point equals zero. The participant correctly identifies the need to balance the downward forces with the upward force at point A.

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Ineedofhelp
Im having trouble with torque and equilibrium (independent study unit) and i was wondering if anything would 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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