a.
Todetermine: Whether the flexing of the elbow shortens the force arm.
Introduction: The shoulder joint is a movable joint that is locateed in the upper limb. It isthe jontthat is known to have the greatest range of motion. The shoulder joint is also the joint that gets easiy dislocated due to its range of motion.
b.
To determine: Whether flexing of the elbow shortens the resistance arm.
c.
To determine: The reason why Exercise 2 (in whicha person lies prone on a table with his arm over the edge and with his shoulder flexed 90 degrees, elbow extended, and lifts a weight up is easier than Exercise 1 (in which a person lies prone on a table with his arm over the edge and with his shoulder flexed 90 degrees, elbow extended, and a weight in his hand).
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