The first set of Thursday quizzes was given in the beginning of class. We were given 10-15 minutes of class time to finish up until it was collected. Groups were then assigned by listing natural disasters alphabetically.
- Avalanche (I think)
- Blizzard
- Cyclone
- Drought
- Earthquake
- Flood
- Gamma ray burst
- Hurricane
After the groups were assigned, we started on our
3rd lab for the semester. The lab was
Motion on a Level Surface with an Elastic Cord. Basically a cart is set on a track and an elastic string is attached. One person holds the end of the string at the end of the track and another pulls on the cart to extend the string to about a meter. Using Logger Pro, a video is recorded when the person holding the cart releases the cart to have the cart speeding down the track. Data and measurements are recorded to analyze how the cart behaved during different acceleration and velocity periods of time.
Professor Mason explained also how to set the X and Y positions in the video if the video was recorded in a slanted position. This was important because the graphs can show incorrect data plots and can ruin curve fits.
In the last 1.5 hours class time, we were to work on the basic structure for our car project with the original groups. Professor Mason demonstrated how his car performed using the mouse trap to propel it down the hallway
but not back.
Near the end of the class, over half of the groups already have built a car that rolls.
Can the groups develop a car that moves forward and back with near zero displacement in two weeks?
Stay tuned for the next Physics 4A class...
No comments:
Post a Comment