I have a few years of physics experience, and as I was thinking about a few things the other day, something about the concept of torque seemed a little weird to me. Simple Forces are easy to understand - gravity pulls down on an object, the ground pushes back up with an equal and opposite force, etc, etc. Now torque - If you think about it from the perspective of work it makes sense - If you apply a force at the end of a long arm to rotate it, the force is greater closer to the axis of rotation because it moves a shorter distance, but performs the same amount of work. However, consider a rigid bar in static equilibrium, with a fixed axis of rotation at one end. There is a weight in the middle, say 100 kg. You push up farther away from the axis so you only have to push with a 50kg force to keep it from falling. At that instant, there is no motion, so you cannot say your hand travels a greater distance than the weight so the force needed is less. With no motion, how does the system "know" (for lack of a better word) to take your 50kg force at the end, and apply 100kg of upward force where the weight is?