Solve Example Problem 4.5 for forearm orientations angled u from the horizontal position. Let u vary from 0708 (down) from the horizontal in 158 increments. Using MATLAB, plot the required biceps muscle force FB for static equilibrium as a function of u. By how much does this force vary over this range?
Problem 4.5
A 160-lb person is holding a 10-lb weight in his palm with the elbow fixed at 908 flexion (Fig. 4.8, top). (a) What force must the biceps generate to hold the forearm in static equilibrium? (b) What force(s) does the forearm exert on
the humerus?
