Question: Problem 3 The upper limb shown below is to support a load in a position where the upper arm is vertical, and the forearm makes

Problem

3

The upper limb shown below is to support a load in a position where the upper arm is vertical, and the forearm makes a right angle with the upper arm. Estimate the tension in the biceps muscle

(F_{B})

and the vertical force on the joint

(F_{E}) .

If the forearm rotates by an angle of

30

in the counterclockwise direction, while maintaining the upper arm vertical, estimate the value of the force

(F_{E}) .

Which case of loading is better and why?

Problem 3 The upper limb shown below is to

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