Posted by ken on Monday, October 12, 2009 at 3:10pm.
Well, you didnt say the mass of the beam. In practice, one cant ignore that.
Where the sign is attached, write vertical force equations (break tension into vertical and horizonal forces), horizontal forces.
Add them, in each case, they equal zero.
Finally, write the sum of moments about that point and set to zero.
It will solve.
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