(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The simple pin-connected structure carries a concentrated load P as shown. The rigid bar supported by structure AB and by pin at C. The steel strut Ab has a cross sectional area of .25in^{2}and a yield strength of 60ksi. The diameter of the steel pin at C is 0.375in and the ultimate shear strength is 54ksi. If a factor of safety of 2.0 is required in both the strut and the pin at C. determine the maximum load P that can be supported by the structure.

http://img707.imageshack.us/img707/21/photowb.jpg [Broken]

2. Relevant equations

[itex]\Sigma[/itex]F_{x}=0

[itex]\Sigma[/itex]F_{y}=0

[itex]\sigma[/itex]_{allow}=[itex]\sigma[/itex]_{failure}/(Safety Factor)

[itex]\tau[/itex]_{allow}=[itex]\tau[/itex]_{failure}/(Safety factor)

Safety Factor=[itex]\sigma[/itex]_{failure}/([itex]\sigma[/itex]_{actual})

Safety Factor=[itex]\tau[/itex]_{failure}/([itex]\tau[/itex]_{actual}

Safety Factor=P_{failure}/(P_{actual})

Safety Factor=[itex]\nu[/itex]_{failure}/([itex]\nu[/itex]_{actual})

3. The attempt at a solution

http://img196.imageshack.us/img196/5855/scan1dl.jpg [Broken]

I know the max allowable P at each point, but what I'm having trouble finding is the max P, based on those max loads at the points. How do I finish solving this?

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# Homework Help: Maximum Force Supported by Allowable Shear

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