1. Rotation while Supported Factors
point of support [e.g. hands]
m of rotating body
k of rotating body
 of rotating body
L of rotating body: L = (mk²) x ()
support pt.
Fg acting on body
Fdrag acting on body

2. FIG 16.1 page 520 g as a Torque to start Rotation
T = 0 when CG is aligned with BOS
T is created when CG falls outside BOS
T is greatest when CG is the furthest dhorz from BOS (hands)

3.  K CG closer to the axis of rotation
UP SWING positions 4 to 6
DOWN SWING positions 1 to 3
g is a Tresistive
 K CG closer to the axis of rotation
 g has  FA
reduce Tresistive
g is a Tmotive
 K CG further from axis of rotation
 g has  FA
maximize Tmotive
FIG 16.2 page 521 K changes in phases of body swing

4. DOWN Path of Giant Swing:
0° - 90° motive Tg increases
91° - 180° motive Tg decreases
two resistive forces: 1. Friction [grip on bar] 2. Drag [air resistance]
FIG page 522

5. UP Path of Giant Swing:
181° - 270° resistive Tg increases
271° - 360° resistive Tg decreases
three resistive forces: 1. Friction [grip on bar] 2. Drag [air resistance] 3. g
FIG page 522

6.  L and  are the same at b & l / c & k / etc.
FIG page 534
Tt of g is the same at the corresponding positions: b & l / c & k / d & j / e & I / f & h
 L and  are the same at b & l / c & k / etc.

7. L about Multiple Parallel Axes
involved in moves such as pole vault and glide kip
rotate as much as possible about primary axis before starting rotation about the secondary axes
premature rotation about a secondary axis will slow or stop the L in the primary section of the body

8. Multiple Parallel Axes Rotation
Timing:
1st rotate about primary axis (shoulder joint)
2nd rotate about secondary axis (hip joint)
Glide Kip
FIG 16-13

9. Multiple Parallel Axes Rotation
Pole Vaulter on left: - insufficient trunk rotation (premature rotation about hip)