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Physics of Martial Arts - FSU High Energy Physics

VIEWS: 0 PAGES: 10

									By Enrique V. Zepeda
Introduction
 Many martial arts techniques were
  developed under the basis of physics.
 Everybody possess potential energy
  depending of the size, muscle strength
  and health.
 Hard style techniques: punching,
  kicking, chopping.
 Soft style techniques: blocking, take
  down’s, arm locks.
Hard style
All hard style techniques are follow
 conservation of mechanical energy:
 E= K+U => K=-U
Where K is the kinetic energy (½ mv2 ),
 and U is the potential energy which can
 be due to gravity or the work produced
 by our muscles, or both.
   Martial artists concentrate all
    of their energy in a very
    small contact point to reduce
    the area so that the force
    produced will not spread
    throughout a large area. This
    pressure produced can be
    calculated:
    P=F/a, where F is the force
    of the hit and a is the area.
Soft style
  The main physical principal is
  conservation of momentum.
  When blocking, martial artist re-
  direct the hit controlling the direction
  of the attacker’s momentum so that
  it goes at an angle. Since the strike
  is now on an angle, the defender
  can use less force.
Another way to use conservation of
momentum is when the defender takes
down the attacker using his/her own
momentum.
The initial momentum of the attacker
becomes the angular momentum of both
the attacker and defender. P=L/r
And since the defender moves along with
the attacker, the defender applies little to
no torque at all.
http://www.youtube.com/watch?v=wlmAoQ
5HYTk
References
 http://entertainment.howstuffworks.com/
  karate2.htm
 http://www.phys.ttu.edu/~cmyles/.../Phys
  ics%20of%20Martial%20Arts.doc

								
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