'(<a href="http://www.j-archive.com/media/2006-04-20_DJ_08.jpg" target="_blank">Jon of the Clue Crew reports from Duke University in Durham, NC.</a>)  Vaulters can use hollow poles to save weight because this center line of <a href="http://www.j-archive.com/media/2006-04-20_DJ_08a.jpg" target="_blank">a bent pole</a> is neutral, taking little or no stress'
the axis
A IN SCIENCE: Vaulters can use hollow poles to save weight because this center line of a bent pole is neutral, taking little or no stress
Vaulters can use hollow poles to save weight because this center line of a bent pole is neutral, taking little or no stress
Vaulters can use hollow poles to save weight because this center line of a bent pole is neutral, taking little or no stress
"A" IN SCIENCE
the axis
"A" IN SCIENCE