Angular motion Flashcards
Biomechanics
What is angular motion?
Movement of a body in a circular path about an axis of rotation.
What creates angular motion?
Forque- eccentric/external force applied outside COM
What is a sporting example of angular motion?
Arm rotating about shoulder of a tennis player serving.
What are the three principle axes of rotation?
. longitudinal
. transverse
. frontal
What is the longitudinal axis?
Runs from top of body to the bottom, through COM
E.G. pirouette
What is transverse axis?
Runs from left to right through COM
E.G. somersault
What is frontal axis?
Runs from posterior to anterior through COM
E.G. cartwheel
What are the three descriptors for angular motion?
. angular distance
. angular displacement
. angular speed
What is angular distance?
total angle of body rotating start to finish
What is angular displacement?
shortest straight line angular path start to finish