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Homework Statement
A 66 kg sign hung centered from a uniform rod of mass 8.2kg and length 2.3m. At one end the rod is attached to the wall by a pivot; at the other end it's supported by a cable that can withstand a maximum tension of 800 N. what is the minimum height h above the pivot for anchoring the cable to the wall?
Homework Equations
Not entirely sure if these apply.
[tex]\tau[/tex] = r x F
[tex]\tau[/tex] = [tex]\Sigma[/tex]
The Attempt at a Solution
Mg = (74.2)(9.8) = 727.16 N (Total Fy)
[tex]\tau[/tex] = (2.3)*(727.16) = 1672.5
After I get this information I'm lost.