In order to treat certain broken bones and other injuries, it is sometimes necessary to immobilize the affected regions and to remove the usual forces from the fracture while it heals. Various systems of traction using weights, ropes, and pulleys are found in current practice (6). Figure 5.5 shows one way to maintain a force on a patient's leg; this configuration is physically similar to the one studied in the experiment. Figure 5.5: A simple traction scheme. Like the experiment, three forces are in static equilibrium in this configuration. Figure 5.6 shows the more elaborate Russell traction system for immobilizing a fractured femur (6). Hayden-Michel Pahing las Free body (a) T T 26 (b) Figure 5.6: The Russell traction system used to immobilize a fractured femur. The system is adjusted so that the angle of elevation of the thigh is approximately 20 (adapted from Williams and Lissner). The lower leg is isolated as a free body. The force F' is the force exerted by the femur on the lower leg. The reaction force --Fis exerted on the femur. The pulley positions are adjusted so that the vector sum of the forces pulls the thigh at the proper angle with respect to the horizontal. The forces and are transmitted through the lower leg. (6) Jerry B. Marion, William F. Hornyak, GENERAL PHYSICS WITH BIOSCIENCE ESSAYS, 2nd Ed. (New York, John Wiley & Sons, 1985). If m = 3 kg, compute the magnitude of the force on the femur and the angle of the thigh in the Russell traction system. (Hint: T = mg). Please express your answers with 1 decimal place.