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January 28, 2015

January 28, 2015

Posted by **Ray** on Wednesday, October 28, 2009 at 11:51pm.

What value of D corresponds to that tension?

- Physics -
**drwls**, Thursday, October 29, 2009 at 9:46amSet the cable tension T equal to 1200 N, the breaking point. Then solve for the value of D that makes the total moment about the hinge equal to zero. The moment due to the weight of the beam acts trhough the center, 1.7 m from the wall. The vertical component of the cable force is T sin A, where A = arctan D/3.4

Use the moment balance to solve for the angle A and then solve for D = 3.4 tan A

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