KIN121 Lecture Notes - Lecture 1: Human Factors And Ergonomics, Speedometer, Yvert Et Tellier
12 Dec 2014
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Kin 121 lec 1: living human things = biology, study of the effects and control of forces = physics/mechanics. Rigid bodies the assumption used in this course: assumes that bodies and body parts do not bend or stretch, well suited for studying (i. e. gait, primary basis of kin121/221. Deformable solids: concerned with the strength and bones and ligaments, etc . Know newton"s law 1 & 2 very well. Important for calculating joint reaction forces. (compressions/shear at joint) Qualitative vs quantitative: qualitative (description of movement eg. visual observation) vs. quantitative (numeric description eg. collected data, qualitative coaching, ergonomics, initial research, clinical assessments, quantitative specific analyses, ergonomics, reseach, clinical assessments. Vector addition: define coordinate system (eg. y-vert, x-horizontal, resolve each force vector into coordinates, add components, calculate resultant, calculate angle, 35. 75n, -8. 6 degrees.
