Category Archives: physics

Optimal race path

I ride my bike to work so I’m often thinking about the best path to take around corners. I know bike racers and car racers (and bob sledders) are often told to head into a corner wide, then cut the … Continue reading

Posted in mathematica, physics, Uncategorized | 4 Comments

Can a pendulum save you?

I’m so thankful to my friend Chija for pointing out this video for me: Here’s her tweet can't wait to analyze this video in class! #ilovephysics #soexcited — Chija Bauer (@bauerphysics) January 25, 2016 When I saw it I … Continue reading

Posted in mathematica, physics, twitter, Uncategorized | 2 Comments

Unstable rotation (spinning handle in space)

First, watch this: Cool, huh? My students found this last year when we were studying rigid body rotation. One of the things we did a lot was try to spin a tennis racquet about an axis in the plane of … Continue reading

Posted in mathematica, physics, Uncategorized | 4 Comments

Faraday’s law is overused

First let me say that I thought for sure I’d written this post last year, but it appears not. That could also mean that maybe I didn’t write it because someone else had a good breakdown of my argument, but … Continue reading

Posted in electromagnetism, general physics, physics | 6 Comments

Circuits: find out now or leave it hanging?

I had a really fun class today. It was a review day, like every Friday, and I started out with a pretty innocuous clicker question (though I don’t use clickers). Go ahead, give it a try. The correct answer changes … Continue reading

Posted in physics, teaching | 4 Comments

Rugby ball bouncing

A friend of mine was telling me that when you play rugby, you can count on the ball bouncing up nice and high for you every third bounce. He showed me in the gym how that’s basically true and I’ve … Continue reading

Posted in mathematica, physics | 1 Comment

How to drill a well

In one of my courses this semester students were learning about the coriolis and centrifugal forces that things seem to experience on the earth. There’s a problem at the back of the chapter that asks when a dropped rock would … Continue reading

Posted in mathematica, physics, teaching | 7 Comments