Originally Posted by JESINSTR
BTS and Ghost. Let me throw this at you just as food for thought.
Consider a tennis ball on a string and we begin to swing it around our head.
Imagine if you will, that the ball out at the end of the string represents our CoM and the point at where our fingers are pinching the string is our edges.
Propulsion for the ball (source for Mr. C) comes from the muscles in our fingers/wrist etc. Propulsion for our skis comes from gravity plus slope.
The significant difference between each scenario is all about the connector. One is a piece of string whose only property is tensile strength whereas in skiing with have an assortment of joints, ligaments and muscles between our source of propulsion and the CoM.
I think (hopefully this is BTS's point of view) it makes sense that we control forces with what is available closest to the source of the force. Like you guys said it is a lot of fun just to let that CoM fly but as you also said, not for teaching's sake and probably not for efficiency as well.
Again as I have said in other posts, this is not about Balance/Imbalance because that word has sooooo many definitions and applications when it comes to skiing. It can only lead to non productive interactions....it is in the end about progressively controlling force.
Originally Posted by borntoski683
I think that entering a turn unbalanced is the same as suddenly having the string go slack somehow in your tennis ball example, and then waiting to generate tension again. In skiing the edges provide what the string provides the tennis ball. Centripetal force. So if you start out unbalanced some of that will be compromised. it's like losing tension in the ball string. The force doesn't even exist unless you ensure your CoM is in the right place relative to your BoS so that those forces will be created. This is a balance skill
BTS Sorry I am late responding to this.
I totally understand where you come from on this. But I would submit that the string on the ball going slack, means the ball (mass) is returning to an inertial path of travel (assuming there is momentum) Likewise, in terms of skiing, once we release from the centripetal force we are generating, our mass returns to an inertial path of travel. As this happens, Our sense of balance now needs to deal with balance against gravity vs the previous requirement to balance against centripetal force. I know Rick calls this "Imbalance" and from a physics definition perspective he is right but from a student's ability to comprehend I wouldn't go there.
In skiing, as long as we are going in and out of circular travel there will be two forces against which we have to balance to keep from falling down. Gravity is the one that our body is designed to deal with, centripetal is the one we have to learn. And when it comes to those intermediates, It is getting them to STOP using gravitational (inertial) balance reactions when trying to build a turn.