A young boy with a broken leg is undergoing traction.
(a) Find the magnitude of the total force of the traction apparatus applied to the leg, assuming ? = 20°, the weight of the leg is 19 N and the weight hanging from the traction apparatus, m, is also 19 N.
(b) What is the horizontal component of the traction force acting on the leg?
(c) What is the magnitude of the force exerted on the femur by the lower leg?