Thank you for the suggestions, but the setup we have is necessary for what we want to do with it later. Measuring gravity was just something we had to verify before we proceeded any further. We are going to spin seeds using our launcher and compare the values of the accelerations for them to...
We think it was a pixelation problem. If the graph of the trajectory was off by a pixel during the first few frames then the acceleration of gravity generated would be less than expected. By increasing the number of frames, the error was reduced. Also, the software generated equation of the...
The laser levels were just being used to make sure the camera and the grid were aligned perpendicularly. We resolved the problem by running the camera at 500 frames per second instead of 250.
There should not be any spin with the ball bearing. The ball bearing it mounted on a pin and the pin is inserted horizontally onto the gun. When the gun launches, the pin stays put and the ball leaves the pin and travels across the grid. The grid is longer than .5 m, but the usual length the...
The bearing is 4 cm in front of the gridl. Not far enough to cause this much distortion we checked. We even used the actual distance the bearing travels instead of the relative distance but to no avail. We realize that the ball is not going to drop very much but we need to shoot the bearing...
As to how we measure the initial velocity, Logger Pro also can determine the velocity by taking the differences of the first two points and dividing by the time between those two points. We are able to get better results when we simply drop the ball bearing with no horizontal velocity. We...
We are using Logger Pro Software to analyze the position of the ball bearing per time period. The software allows us to calibrate the length that the ball travels by setting a length equal to a certain number of pixels. Once we have done this, we simply mark the center of the ball on each...
We are trying to calculate the acceleration of gravity using a quarter inch ball bearing and a high speed video camera. The ball bearing it shot at 6 m/s across a grid .5 meters long. The high speed camera is 1.8 meters away and records the position of the ball at 250 frames per second. We...
We are trying to calculate the acceleration of gravity using a quarter inch ball bearing and a high speed video camera. The ball bearing it shot at 6 m/s across a grid .5 meters long. The high speed camera is 1.8 meters away and records the position of the ball at 250 frames per second. We...