KP351 Lecture Notes - Lecture 11: Ankle, Anatomical Terms Of Motion
20 Mar 2020
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E ects of a force applied over a distance. Work = f x cos theta x s (f = force n and s = displacement) Theta = angle between force vector and line of displacement. F = 50 n, s = 0. 1m, theta = 0 degrees) Work = 50 x cos(0) x 0. 1. F = 50, s = 0. 1m, theta = 30 degrees) Work = 50 x cos(30) x 0. 1. Power = work / time or f x v (measured in watts) Power = 4. 33 j / 0. 5s or 50 x 0. 1/0. 5 = 10 w(j/s) Kinetic > energy resulting from a motion. Potential > is the capacity to do work because of position or form. Mass x acceleration due to gravity x height. In order for energy to be changed work needs to be done. X y and z not always ml, ap, and vertical. You have to set up the coordinate system.
