How to Approach a Three-Dimensional Force System with a Corner Joint?

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SUMMARY

The discussion focuses on solving a three-dimensional force system involving a corner joint, specifically the configuration of wires from points B to A to C. The key equation referenced is F = Fu, indicating that the forces are in equilibrium at point A. Participants emphasize the importance of understanding the angles and the relationship between the tensions in wires AB and AC to effectively analyze the system. The corner joint configuration presents unique challenges that require a clear approach to resolve the forces involved.

PREREQUISITES
  • Understanding of three-dimensional force systems
  • Knowledge of equilibrium conditions in static systems
  • Familiarity with vector analysis and tension in cables
  • Basic trigonometry for angle calculations
NEXT STEPS
  • Study the principles of static equilibrium in three-dimensional systems
  • Learn how to apply vector analysis to determine forces in cable systems
  • Explore the use of free body diagrams for complex joint configurations
  • Investigate the role of angles in tension calculations for corner joints
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Students in engineering mechanics, particularly those studying statics, as well as professionals dealing with structural analysis and design involving cable systems.

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Homework Statement



http://img202.imageshack.us/img202/3496/71042279.jpg

Homework Equations



F = Fu

The Attempt at a Solution



Okay, so um I'm having trouble with this particular question. Normally if the wires were all straight, I'd have no problem solving this. But for this question, the wire seems to go from B to A to C, creating this corner/joint looking thing.

How do I solve with this thing? Kind of confused how I can utilize the angles as well... thanks the help in advance. I don't need answers or anything, but I just need a push to get started. The CAB corner joint thing is really throwing me off here. Not sure how to proceed.

Thanks again.
 
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hi mneox! :smile:
mneox said:
Okay, so um I'm having trouble with this particular question. Normally if the wires were all straight, I'd have no problem solving this. But for this question, the wire seems to go from B to A to C, creating this corner/joint looking thing.

the weight at A is in equlibrium, so that gives you an equation relating the tensions in AB and AC :wink:
 

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