In executing the biceps-curl exercise, the man holds his shoulder and upper arm
Chapter 3, Problem 3/121(choose chapter or problem)
In executing the biceps-curl exercise, the man holds his shoulder and upper arm stationary and
rotates the lower arm OA through the range \(0 \leq \theta \leq 105^{\circ}\). The detailed drawing shows the effective origin and insertion points for the biceps muscle group. Determine and plot the tension \(T_B\) in this muscle group over the specified range. State the value of \(T_B\) for \(\theta = 90^{\circ}\). Neglect the weight of the forearm, and assume slow, steady motion.
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