Page 71 - AERIAL ACROBATICS & CALISTHENICS VOL. 1 (ENG).pdf

7.1 → MOVEMENT ENERGY
UNIFORM CIRCULAR MOTION:
can be described as the motion of an object along a circular path with a con- stant angular rate of rotation and at a constant speed.
ROTATIONAL KINETIC ENERGY:
is usually described as the kinetic energy of an object while it is spinning around a single fixed axis of rotation. This energy can be expressed in terms of the mo- ment of inertia and an object’s angular velocity. An object whose mass is far away from its axis of rotation would need more energy to gain angular speed.
CENTRIFUGAL FORCE:
is an inertial force (also described as “fictitious” or “pseudo” force) directing a ro- tating body away from the center of rotation that appears to act on all objects when viewed in a rotating frame of reference.
AXIS
ORBIT
AXIS
How is this information relevant in aerial acrobatics and aerial calisthenics?
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EXAMPLE:
When performing a one-arm spin (Ch. 10), the circular movement of the body “generates” rotational energy, meaning that our body is subject to a centrifugal force that we will then optimise and use to reach the desired ending position (nutcracker, meathook, back flag/side planche, etc.).
THE AERIAL MOVEMENT® 69
Velocity
Velocity
Centripedal force
Centrifugal force
Velocity