chapter 14 Flashcards
1
Q
relative vs absolute angles
A
relative: angle formed btwn mechanical axes of two articulating segments in single jnt system
absolute: angle formed btwn longitudinal axis of segment and an absolute reference line
2
Q
what happens linear kinematics when there is a constant angular quantity?
A
increase radius = linear quantity at end of radius increases
3
Q
what happends to angular kinematics when there is a constant linear velocity
A
increase radius=decrease angular velocity
decrease radius = increase angular velocity
4
Q
describe linear and angular kinematics of golf swing
A
- longer club length = greater linear velocity at end of club
- greater momentum transferred to ball
5
Q
describe angular and linear kinematics of spinning skater
A
- constant linear velocity at hands
- arms brought into body = decrease radius = increase angular velocity
