angles_c

# angles_c - Angular Kinematics Angular Kinematics D. Gordon...

This preview shows pages 1–3. Sign up to view the full content.

1 Angular Kinematics D. Gordon E. Robertson, Ph.D. School of Human Kinetics University of Ottawa 2 P Three acceptable SI units of measure < revolutions (abbrev. r) < degrees (deg or E , 360 E = 1 r) < radians (rad, 2 π rad = 1 r, 1 rad . 57.3 deg) P Angles are discontinuous after one cycle P Common to use both absolute and relative frames of reference P In three dimensions angular displacements are not vectors because they do not add commutatively (i.e., α + β β + α ) Angular Kinematics Differences vs. Linear Kinematics 3 absolute angles for segments relative angles for joints 4 P Used to define angles of segments P Frame of reference is stationary with respect to the ground, i.e., fixed, not moving P In two-dimensional analyses, zero is a right, horizontal axis from the proximal end P Positive direction follows right-hand rule P Magnitudes range from 0 to 360 or 0 to +/-180 (preferably 0 to +/-180) Absolute or Segment Angles Uses Newtonian or inertial frame of reference

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
5 Angle of Foot
This is the end of the preview. Sign up to access the rest of the document.

## This document was uploaded on 11/04/2011 for the course MME 512 at Miami University.

### Page1 / 4

angles_c - Angular Kinematics Angular Kinematics D. Gordon...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online