Find the the axial-force in the member BC

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Discussion Overview

The discussion revolves around determining the axial force in member BC of a mechanical system involving pulleys. Participants are exploring the problem without a clear starting point, focusing on the need for a free body diagram and the implications of missing angle information.

Discussion Character

  • Exploratory, Homework-related

Main Points Raised

  • One participant expresses uncertainty about how to begin solving the problem and mentions a specific answer they believe is correct.
  • Another participant suggests starting with a free body diagram to identify and resolve forces acting on the bar.
  • A different participant notes the absence of angle information, suggesting that the system may reach equilibrium without it due to the smooth pulleys.
  • One participant questions how to determine the angles necessary for the analysis.

Areas of Agreement / Disagreement

There is no consensus on how to approach the problem, with participants highlighting different aspects of the challenge and expressing uncertainty about the missing information.

Contextual Notes

The discussion highlights limitations related to the lack of angle information and its potential impact on solving the problem, as well as the reliance on equilibrium conditions.

TSN79
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I've come across a problem I can't solve, and I'm hoping you can help me out here...I've got this setup you can see in the drawing. I'm supposed to find the the axial-force in the member BC. I don't even know where to begin...the answer is supposed to be [tex]G-\sqrt{G^2-GF}[/tex]
Anyone...?
 

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It always helps to start these problems by drawing a free body diagram.

Draw one for the bar, and mark on it all forces. You should then be able to start resolving the forces, parallel and perpendicular to the bar.

See how you get on.
 
the big problem is there is no angle given - and probably not necessary - because the system will adjust itself for a suitable equilibrium- the pulleys are smooth.

this is difficult. can anyone do it?
 
how on Earth can we determine the angles? ?
 

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