Recent content by bobfrancis1980

Here are the plots: Bounce Detection Algorithm Velocity of Y-Axis Bounce Detection Algorithm Acceleration of Y-axis Finite Difference Algorithm Velocity of Y-axis Finite Difference Algorithm Acceleration of Y-axis Even Bounce Detection Ay oscillates between 20m/s2 and 0m/s2 for much of the...

I was wondering if anyone here had experience with the physics program Tracker? I used it to analyze a free-fall video I made in an effort to learn how the program works. The video is 240fps and 720p. The program reports a smooth upward line for velocity. After the velocity plot is done I...

I have figured out where I want to run the level, horizontal 100lb break strength fluorocarbon fishing line. I have a long wooden ramp up to the front door and I would run the line along the longest part of the ramp. I was thinking, in order to have the fishing line completely taut, on one end I...

Thanks Tom, I think you have pulled things together for me. I found a puncture pin here: https://www.midwesttechnology.com/abs-co2-dragster-electronic-raceway-firing-pins/ I could3d print a housing and place a heavy duty spring on the threaded part with a nut on the end. Then pull back on the...

I have used Autodesk Fusion 360, I have a 3D printer, and I have a CNC router so I am not above designing the case and parts but I just haven't seen a simple method for retracting a puncture pin and then releasing it on the web. Not too many people messing with CO2 cartridges outside of CO2 cars...

I have no intention of discussing the purpose of the experiment. I should have crafted my post more carefully.

There are some magnet drop experiments in the literature and I want to try an alternative experiment to determine if the magnetic fields affect inertial mass. I am designing a submarine shaped enclosure where I will have either two 2"OD 1/4"ID 1"thick N42 magnets with their opposite poles...