The traction apparatus used for correcting dislocated shoulders may look like this one on the picture below:
So, since the outward traction force must be 5.6 N, it must be provided by the forces A and B directed at some angle. Using horizontal projections we get for equal forces A and B
"F=\\frac{5.6}{2\\text{cos}32^\\circ}=3.3\\text{ N}."
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