Definition: [adj] tending to move away from a center; "centrifugal force"
Definition: [adj] tending to move toward a center; "centripetal force"
I just use only the more common term 'centrifugal' force since both are equal in value but opposite in direction. I sometimes wonder why there is a need to have two names for the same force. Whenever you have a force in one direction there is most always a counter-force in the other direction. We don't make up a separate name for the opposite of gravity. Maybe we could call it 'ground pushback' or something?
In my picture there are two pendulum weights pivotally attached to a wheel, a red weight and a green one. Both are inter-connected at their pivot points using cords and pulleys shown in blue. Gravity is trying to pull both weights downward. But the inter-connection makes the weights swing in opposite directions. They would balance when the torque on both pivot pulleys are equal. In this case the green weight will swing down 25 degrees and the red one up 25 degrees so that both are at a same angle.
Now if the wheel is rotating then CF will not produce any torque on the green weight's pivot pulley because the CF is straight out from the axle and there is no leverage. The red weight will have CF trying to turn it CW. As it swings farther out nearer the edge CF will increase but leverage will decrease.
So by this little demo picture you can see that the torque that is trying to 'swing' the weights is very complex. It is a mix of gravity, centrifugal force, leverage angle, distance from axle, momentum and pulley inter-connection. These all combine in a complex manner to torque the pendulums one way or the other. This is only one pair. Now connect a second pair so you have 'a pair of pairs' of weights and things get really complex. And very interesting.
