Figure $2$

Consider the split Russel traction device and a mechanical model of the leg shown in figure $2$ above. The leg is held in the position shown by two weights that are connected to the leg via two cables.

The combined weight of the leg and the cast is $W=400N.$ L is the horizontal distance between points A and $B,$ where the cables are attached to the leg$/$cast$.$ Point $C$ is the centre of gravity of the leg including the cast which is located at a distance three$-$quarters of $L,$ as measured from point $A.$ The angle cable $2$ makes with the horizontal is measured as $=60.$