What forces are involved?
My apologies for resurrecting a relatively old thread, but this topic is one I've been wondering about for some time. My question is:
What force is it that causes the ball in the inclinometer which is part of the Turn Coordinator (or Turn & Slip indicator) to move up one side or the other of the instrument?
I've been trying to imagine the simplest case in which the ball would move, in order to deduce the forces at work. This case seems to be the application of rudder in straight & level, unaccelerated flight, where the turn which would result in a plane having positive dihedral is countered by the application of opposite aileron, establishing a skid. In this case, the inclinometer, mounted forward of the CG, shows that rudder opposite to whatever had been applied needs to be applied. So, for example, if right rudder was applied, the ball would move left, indicating that left rudder is needed in order to get coordinated again.
What is it that causes the ball to move, and are those forces reversed when the inclinometer is mounted aft of the CG?