Bones and muscles. A patient in therapy has a forearm that weighs 20.5N and lifts a 112.0N. The only other significant force on his forearm come from the biceps muscles (which acts perpendicularly to the forearm) and the forces at the elbow. If the biceps produce a pull of 232N when the forearm is raised 43 degrees above the horizontal, find the magnitude and direction of the fore that the elbow exerts on the forearm. ? PLEASE SHOW WORK AND I WILL RATE YOU!