Answered: The device shown in the figure below is…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter12: Fluid Dynamics And Its Biological And Medical Applications

Section: Chapter Questions

Problem 2PE: The heart of a resting adult pumps blood at a rate of 5.00 L/min. (a) Convert this to cm3/s. (b)...

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The device shown in the figure below is one version of a Russell traction apparatus. It has two functions: to support the injured leg horizontally and at the same time provide a horizontal traction force on it. This can be done by adjusting the weight W and the angle θ. For this patient, his leg (including his foot) is 90.0 cm long (measured from the hip joint) and has a mass of 11.4 kg. Its center of mass is 41.0 cm from the hip joint. A support strap is attached to the patient's ankle 13.0 cm from the bottom of his foot.

1) What weight W is needed to support the leg horizontally?

Express your answer in newtons.

2) If the therapist specifies that the traction force must be 16.0 N horizontally, what must be the angle θ?

Express your answer in degrees.

3) What is the greatest traction force that this apparatus could supply to this patient's leg?

Express your answer in newtons.

4) What is θ in that case?

Express your answer in degrees.

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