6, Solve Example Problem 4.8 for forearm orientations angled from the horizontal position. Let vary from 0 to 70 down from the horizontal in 5 increments. Using MATLAB, plot the required biceps muscle force FB for static equilibrium as a function of . By how much does this force vary over this range? 6, Solve Example Problem 4.8 for forearm orientations angled from the horizontal position. Let vary from 0 to 70 down from the horizontal in 5 increments. Using MATLAB, plot the required biceps muscle force FB for static equilibrium as a function of . By how much does this force vary over this range