1. The problem statement, all variables and given/known data A patient in therapy has a forearm that weighs 20.5N and lifts a 112.0N weight. The only other significant forces acting on the forearm come from the biceps muscle (which acts perpendiculary to the forearm) and the force at the elbow. If the biceps produce a pull of 232.0N when the forearm is raised 43 degrees above the horizontal, find the magnitude and direction of the force that the elbow exerts on the forearm. 2. Relevant equations Vector addition, subtraction, ect. 3. The attempt at a solution My only problem with this question is drawing the correct vector diagram. I know that the elbow and biceps together will produce a resultant force of 132.5N upwards to keep the forearm balanced (equilibrium), but i'm not sure where to draw these vectors :tongue:. If someone could help me out here it would be greatly appreciated, thanks in advance. PS: I included a diagram of what I drew, so hopefully it will pop up.