S
Stretchsportguy
The forces in a rotating object project outward from the axis of rotation. The further away you get from the center, the greater the force becomes due to the increase in speed. The further away from the center, the more forces there are.
Any changes relating to the length of the object that is spinning results in changes of the forces.
Hence changing the length of the body by bending, dropping an arm, a forearm, a shoulder, bringing one leg in more than the other, tilting the head to the side with the arms already at your sides, etc., affects these forces in that they increase or decrease. The off balance of doing this on one side of the body while rotating is what creates the momentum for twisting because the body wants to speed up on that side.
http://iweb.tntech.edu/murdock/books/v2chap1.pdf
Any changes relating to the length of the object that is spinning results in changes of the forces.
Hence changing the length of the body by bending, dropping an arm, a forearm, a shoulder, bringing one leg in more than the other, tilting the head to the side with the arms already at your sides, etc., affects these forces in that they increase or decrease. The off balance of doing this on one side of the body while rotating is what creates the momentum for twisting because the body wants to speed up on that side.
http://iweb.tntech.edu/murdock/books/v2chap1.pdf