Forces in a Truss: Solve for AB Force

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SUMMARY

The discussion focuses on solving for the force in member AB of a truss structure using the method of joints. The user inquires about sectioning the truss through members AB, BE, and EF while disregarding fixed connections. A participant suggests calculating the reaction forces at points A and E by taking components and moments, ultimately confirming a calculated force of 36 kN in member AB, indicating a potential typo in the provided solution.

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[PLAIN]http://img109.imageshack.us/img109/3825/truss3.jpg
I am having some problems with this one. Can I section the truss through members AB, BE and EF to solve for the force in AB, thus disregarding the fixed connections at left? I suppose I could go join by join, but I would like to section if possible.

Any help would be great.

**MODS Can you move this into the homework section. I just noticed your sticky but already created the thread ***
 
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hi canicon25! :wink:

have you tried finding the reaction force at A and E, by taking components and moments? :smile:
 
i used method of joints and went one by one with this one after all. i think the provided solution is an error; i worked out 36kN twice. typo i think.
 

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