{
"cells": [
{
"cell_type": "markdown",
"metadata": {
"lang": "en"
},
"source": [
"# Center of Mass and Moment of Inertia\n",
"\n",
"> Renato Naville Watanabe, Marcos Duarte \n",
"> [Laboratory of Biomechanics and Motor Control](http://pesquisa.ufabc.edu.br/bmclab/) \n",
"> Federal University of ABC, Brazil"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"\n",
"An animation of a biomechanical analysis of Daiane dos Santos executing the Dos Santos I movement in artistic gymnast: a piked double Arabian (a half twist into a double front flip in a piked position).
I: While her body translates and rotates in varied ways, the trajectory of the body center of mass is always a parabola during the aerial phases (minus some experimental error).
II: To execute the double front flip at the last jump, she increases the body angular speed by flexing the hips (piked position), which decreases the body moment of inertia — she knows the law of conservation of angular momentum.
Note the view is not from a right angle to the sagittal plane (Image from BMClab)."
]
},
{
"cell_type": "markdown",
"metadata": {
"toc": 1
},
"source": [
"