How to Use Newton's Second Law to Solve for Tension in Statics Problems?

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To solve for tension in statics problems using Newton's Second Law, it is essential to recognize that the system is in equilibrium, meaning acceleration (a) is zero. The equation ΣF = ma can be applied, but it may require additional methods like the law of sines for complex scenarios. A free body diagram is recommended to visualize forces and moments acting on the system. Summing moments about a specific point, such as point B, helps determine the necessary forces for equilibrium. Understanding these principles is crucial for accurately calculating tension in static systems.
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Homework Statement



[PLAIN]http://img28.imageshack.us/img28/2106/241s.png

Homework Equations



ΣF = ma

The Attempt at a Solution



I'm really confused here, is using ΣF = ma even possible to find the tension here? Or do I have to utilize some other method, like law of sines?
 
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The system is in equilibrium, so a = 0 . You might want to draw a free body diagram of member BC and sum moments about B, where the sum of moments (and forces) about B must equal _____??
 
I think I figured it out for the most part, thanks for the hint.
 

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