Checking My Work: Solving for Force in Member GH

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Discussion Overview

The discussion revolves around solving for the force in member GH of a truss structure, specifically comparing the participant's calculated value with that obtained from a force truss member calculator. The context is a homework problem involving static equilibrium and force analysis in truss members.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • The participant calculated the force in member GH to be 11.3 in tension, while the calculator indicated a force of 6 in tension.
  • Some participants suggest that the participant's answer seems reasonable and advise against relying on the calculator's output.
  • The participant also provided the force in member AG as 6.91 in tension, seeking further validation of their calculations.

Areas of Agreement / Disagreement

There is no consensus on the correct value for the force in member GH, as participants have differing views on the reliability of the calculator versus the participant's calculations.

Contextual Notes

The discussion does not address potential assumptions or limitations in the calculations, nor does it clarify the methodology used to arrive at the values for the forces in the members.

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1. Homework Statement
I solved for all the forces in the members, but I was using a force truss member calculator to check my work. All the forces match up with the calculated but one, that is the force in member GH. I get 11.3 in tension the calculator gets 6 in tension. So am I right or the calculator? I attached the diagram. The load is 12.5 and is applied at joint C. There is a roller at joint I and a hinge at joint F. Can someone solve for member GH and tell me what they get.

Homework Equations

The Attempt at a Solution

 

Attachments

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Your answer looks about right. What force did you get in AG? If the calculator is messed, I wouldn't compare your answers to it for any member.
 
PhanthomJay said:
Your answer looks about right. What force did you get in AG? If the calculator is messed, I wouldn't compare your answers to it for any member.
6.91 in tension
 

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