The device shown in the figure below is one version of a Russelltraction apparatus. It has two functions: to support the injuredleg horizontally and at the same time provide a horizontal tractionforce on it. This can be done by adjusting the weight, W, and theangle. For this patient, his leg (including his foot) is 95.0 cmlong (measured from the hip joint) and has a mass of 14.2 kg . Itscenter of mass is 41.0 from the hip joint. A support strap isattached to the patient's ankle 13.0 cm from the bottom of hisfoot.
What weight is needed to support the leg horizontally?
If the therapist specifies that the traction force must be 12.0 Nhorizontally, what must be the angle?
What is the greatest traction force that this apparatus couldsupply to this patient's leg? What is the angle in that case?
The device shown in the figure below is one version of a Russelltraction apparatus. It has two functions: to support the injuredleg horizontally and at the same time provide a horizontal tractionforce on it. This can be done by adjusting the weight, W, and theangle. For this patient, his leg (including his foot) is 95.0 cmlong (measured from the hip joint) and has a mass of 14.2 kg . Itscenter of mass is 41.0 from the hip joint. A support strap isattached to the patient's ankle 13.0 cm from the bottom of hisfoot.
What weight is needed to support the leg horizontally?
If the therapist specifies that the traction force must be 12.0 Nhorizontally, what must be the angle?
What is the greatest traction force that this apparatus couldsupply to this patient's leg? What is the angle in that case?