Picture of the racecar friction lab in action yesterday. POV: camera behind a white truck matchbox toy poised at the top of a steep track that goes down from a library shelf over pillars of chairs and old atlases till the track peters out by the closed library door. The vehicle has been modified with a wooden block on the roof, a popsicle stick sticky tacked horizontally onto the bumper, and unbent paper clip “wings” protruding out the side with sticky tacked blobs at the each end.
An screenshot of an old Twitter #ForceAndMotion friction racecar post from 2022 which explains similar content to my post here and in the alt text for the other image here. It shows that there’s a video on the old tweet of a vehicle currently poised at the top of the track. On that video, I had a student (not visible) explain their hypothesis before nudging the car down the track…it stopped halfway down!
I didn’t share a link because, even though it’s a cool little video, who really wants to go back to the old, bad place and hang with Papa Muskrat’s crew…? But, if someone wanted to see it, the search terms needed are the hashtag I mentioned and friction racecar…
Yesterday:
Revisited an annual
(since at least 2017) #ForceAndMotion Gr 2 friction racecar lab.
Hot wheels track, matchbox cars. Modification supplies: sticky tack,paper clip,pipe cleaner,elastic…
Goal: Incr friction, have car stop on steep track; can’t block wheels; all four must connect w/ track.