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G-reg

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## Homework Statement

In the figure below, a uniform beam of weight 520 N and length 3.4 m is suspended horizontally. On the left it is hinged to a wall; on the right is it supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap the cable is 1200 N.

What value of D corresponds to that tension?

## Homework Equations

[tex]\Sigma\tau[/tex] = 3.4m(520N) + ?

## The Attempt at a Solution

I'm not really sure what to put in after what I have put in already.

I know it's conservation of torque but that's about it..