1. The problem statement, all variables and given/known data Calculate the torque (magnitude and direction) about point O due to the force \vec F in each of the cases sketched in the figure View Figure . In each case, the force \vec F and the rod both lie in the plane of the page, the rod has length 4.00 m and the force has magnitude 19.0 N. Calculate the magnitude of the torque in case (a). Find the direction of the torque in case (a). 2. Relevant equations torque = Fl 3. The attempt at a solution First I drew a free body diagram for portion a. Looks like this: http://img477.imageshack.us/img477/8995/54669928ap7.jpg [Broken] then I read that the lever arm is suppose to be perpendicular distance from axis of rotation to line of action of force. But in my free body diagram, the l is not perpendicular to the force, so this is where I am stuck. After this how do I proceed. ? Please and thank you.