In this analysis we will study the
correlation between loss of kinetic energy and deformation of soda
cans. To analysis the video we will use
LoggerPro (which you have used previously for various homework assignments):
- Start LoggerPro.
- From the
“Insert” menu, select “Movie” to open the movie
you want to analyze.
- At the bottom
right-hand side of the video window you see a button with red dots
with allows you to “Enable/Disable Video Analysis”. Enable
video analysis a set of tools will appear on the right-hand side of
the video window.
- Select the
ruler button to set the scale. Use the rulers on the left-hand
side of the video to calibrate your screen. After selecting the
ruler button you move your mouse to the rear wheel of the left cart
in the video, click-and-hold your mouse button, move your mouse horizontally
to
below the light that is mounted on the cart, and release the mouse
button. A
window will emerge, asking you for the length of the
“calibration line” you just drew on the screen. This distance
should be 76.6 cm.
- Use
the “red-green dot button” to select "Point Sries: X:Y” and
use the mouse to the position of one of the two cart in your collision
video. Each time you select a position in a frame, the video
will advance to the next frame.
- At the end
of the video, rewind it, use the “red-green dot button” to
add another “point series”, specifying the position of
the other cart.
- After completing
your data entry you will see that the x and y positions
and velocities for all frames and for both data series are listed
in the data table. These data can be exported by selecting “Export
as …. Text”
from the file menu. The file created can be imported into Excel
or IGor and you can use Excelor IGor to determine the velocities.
- You can also do the entire analysis within Logger Pro. Click here to see a demonstration of the capabilities of Logger Pro.
- Or, even better, you can do the analysis with IGor Pro. Click here to see a demonstration of the capabilities of IGor Pro.
Details about the collisions can be found by looking at the following
page: Collision Page
Links to the collision videos can also be found here.
Last updated on
Wednesday, November 15, 2023 17:21
