To lift someone up (force)?

Question

A man lifts someone up by the neck and, with both arms fully extended and horizontal, holds the person off the ground. If the person being held weighs 710 N, is 60 cm from the shoulder joint, and the man has an anatomy analogous to that in the figure below , what force must each of the deltoid muscles exert to perform this task? (Take the weight of the arm of the man to be

http://i116.photobucket.com/albums/o23/dead10252006/10.gif

oops! take the weight of the arm of the man to be 30 N

Answer 1

(Take the weight of the arm of the man to be ....... ???