Overall Driving Question: What is the most efficient pass?
Experimental Driving Question: What is the average torque exerted on one's leg during a pass to a teammate from a distance of 2-5 meters
Experiment Details: For my experiment, I wanted to test the torque of short passes rather than long passes. Throughout this year, most of my passes and experiments have been based around 20-30 meter passes. However, soccer is not only about long balls and passes but also short passes. I recorded my leg at the height of contact in order to determine the degree and will find average torque exerted on the leg utilizing the data I find later within this project. Additionally, for the simple harmonic motion, I will be analyzing the change in the vertical position of my leg for my oscillation.
Example Video:
Other trials in this folder
Link to Motion & Force Graphs
Free-body Diagram (ball):
Force applied (kick); Friction force (rolling); ball rolls clockwise and experiences force through friction; angle is 90 degrees
Free-body Diagram (leg):
Force from leg; Force of drag opposing; net torque zero; angle is 90 degrees
Derivations/Equations I used:
Claude AI:
Data Findings:
Period: 1.296 seconds
Resistive forces
Force of drag (leg)
Force of friction (ball & ground)
Radius (my leg): .88m
Average degrees: 96
Mass (my leg): 9.841kg
Average angular acceleration (my leg): -4.998 rads/s^2
Average Torque exerted on my leg: -41.471 N*m
Conclusions/Results:
Overall, my findings were very accurate in comparison to Claude AI's results. By understanding torque and the forces that act upon my leg during these passes. I will be able to improve my game as a soccer player and reduce the external factors affecting my leg and account for them within games or practices.
Extraneous Variables:
Type of shoe used
Amount of force (torque relies on force)
Mass of person (mass of leg will vary)
Distance of the pass (longer passes require a greater acceleration)
Radius of leg
The takeback of the leg (degrees traveled will increase)
Windy vs non-windy