Both forces "point through" the dancer's center of gravity,
so torque is zero.
Forces on each dancer sum to zero.
Though some forces are "off-center", the torques also
sum to zero.
Smaller floor contact area (en pointe, for example)
makes balance more difficult.
Not all positions which are statically balanced can be
held in a turn.
Centrifugal forces exert a torque, throwing the dancer
off balance. Shift center of gravity to maintain dynamic (but not static)
balance
Because of "conservation of angular momentum," you can
change the speed of a turn when en pointe by extending or retracting
a leg.
You push on the floor one way, the floor pushes back the
other way. (You can't do this on a slippery floor!)
Dancers can also perform zero-angular-momentum turns.
Gravity only influences the vertical component of motion,
not the horizontal:
Height vs. time is a parabola, while horizontal distance
vs.
time is a straight line:
The dancer can create an illusion of floating:
clipped from: web.hep.uiuc.edu 
