The Physics To Go website will be unavailable Friday evening through Saturday afternoon as electrical work occurs in the American Center of Physics server room. Down time will begin at 6PM Eastern Time on Friday. Service is expected to resume by 6PM on Saturday, July 30.
This lab uses Tracker 4.0 video analysis software to measure and analyze the center of mass motion of a person landing after a jump. Students measure the acceleration of the person in free-fall and his acceleration while he is landing and slowing down. Students use the data to calculate the force of impact by the floor on the student during the landing. There are two video files: (1) the student bends his knees a maximum amount during the landing in order to decrease the force of impact by the floor; and (2) the student bends his knees a small amount in order to increase the force of impact on the floor.
The zip file contains two folders: (1) a long time interval during the landing and (2) a short time interval during the landing. Each folder includes the lab handout, a video, and a Tracker 4.0 file. The video was recorded by Aaron Titus at High Point University.
Person Landing After a Jump Video Analysis Exercise
Students are asked to measure the force of impact by the floor on a person as he is landing on the floor after he jumps from a table. You will compare the impact force in two different cases: (1) he bends his knees as much as possible and (2) he bends knees a small amount.
%0 Computer Program %A Titus, Aaron %D January 9, 2011 %T Person Landing After a Jump %8 January 9, 2011 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=11285&DocID=2308
Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.