1. The problem statement, all variables and given/known data Sorry if I posted in the wrong section, this is actually an App Maths question, but anyway The two shafts are subjected to the torques (couples) shown. (a) If you represent the two couples by a force F acting at the origin O and a couple M, what are F and M? (b) What is the magnitude of the total moment exerted by the two couples? Diagram: 2. Relevant equations 3. The attempt at a solution I do know what M is, long story but my final answer is 6.05Nm. I just don't get how to solve for F and I am completely stuck, any help ?