Embedded Files
Veritasium (What is a Force)
Veritasium (What Forces are Acting on You)
Veritasium (Third Law)
MIT (1st and 2nd Law)
MIT (3rd Law)
Logger Pro Download Links
Logger Pro 3.16.2 Downloads
Windows 11, 10 or 7
Link: https://www.vernier.com/d/uwaq8
macOS 12, 11, 10.15, 10.14, 10.13
Link: https://www.vernier.com/d/jo2nz
Detailed Instructions
For more details on how to download and install Logger Pro, see:
https://www.vernier.com/til/2069/
General Logger Pro Instructions
Working with the Video
1. Open Logger Pro
2. Select “Insert” from the menu, then “Movie…”
3. Locate your movie and open it
4. Play your movie and determine which part of it you will analyze
5. Click the button to open the video analysis window
6. The starting point of your analysis should be just after the projectile leaves the hand of the person throwing it. Use the and buttons to cue the video to the appropriate frame.
7. Click the button. This allows you reference how far one metre is in your video. Starting at one end of the metre stick in your video, click and drag a green line to the end of the metre stick. When you release the mouse button, a dialog box will appear. Make sure that the distance is 1 m, then click “OK”.
8. Click the button then click on the starting point of the projectile. This will be the origin of your graph and all displacements will be measured from this point.
9. Next, you will enter data points by clicking the button. This allows you to add points to your video frame by frame while producing a graph of your data at the same time. After clicking on the button, click on the position of the projectile. The video will automatically move to the next frame. Click on the position of the projectile again and repeat this process until you have a satisfactory amount of data.
Analyzing the Position-Time Graphs
You should now have two sets of data, x-position and y-position, graphed in red and green.
Add a line through the x-positions of the data by clicking the button and selecting “VideoAnalysis:X” (both are initially selected, so deselect “VideoAnalysis:Y”). Make sure the equation is shown on your graph.
Fit a curve through the y-positions of the data by clicking the button and selecting “VideoAnalysis:Y”. In the “Curve Fit” window, select the quadratic general equation and hit the “Try Fit” button. If a smooth black line is drawn through your points, hit “OK”. Make sure the equation is shown on your graph.
Use the “Print Preview” option in the “File” menu to check that all your data will be printed properly. The data columns for “Time”, “X” and “Y” should be visible as well as all the data points and the information for the line and curve.
Add an appropriate title for your graph.
Print the graph, changing the name to something appropriate and adding your names as the comment.
Analyzing the Velocity-Time Graph
You will now analyze the y-velocity data by graphing the “Vx and Vy” column.
Click the button to draw a line through the data points for both the X and Y component. Make sure the equation is shown on your graph.
Use the “Print Preview” option in the “File” menu to check that all your data will be printed properly. The data column for “Vx and Vy” should be visible as well as all the data points and the information for the line.
Add an appropriate title for your graph.
Print the graph, changing the name to something appropriate and adding your names as the comment.
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