Media Tennis racket theorem

[Martian]

This is a fun video. It's mathematically described by Euler's laws of motion.

 

[Einstein]

The rotational direction appears to remain the same. But it doesn't appear to be rigidly attached to the T-handle.

A similar phenomena is also exhibited by the Tippe Top.

 

[Martian]

The angular momentum stays the same, but rotation about one of the axes is unstable, causing the angular velocity and inertia tensor to change. I had seen a similar video years ago and forgot about it, so I was excited when I found this. The tippe top is pretty neat, too.

 

[Einstein]

What is different about the T-handle is that rotation is going on in two planes that are at right angles to each other. The rotation directions appear to almost be connected to a spatial reference frame. But the T-handle body is experiencing an alternating directional change inside one of the spatial 2-D reference frames.

This makes me think there are preferred rotational directions that are connected to each spatial 2-D plane. I've been experimenting with this phenomena in Tesla's Zero Time Generator.

 

[Martian]

A pretty thorough mathematical analysis can be found here: http://physics.ucsd.edu/students/courses/winter2008/physics110b/LECTURES/CH13_RIGID_BODIES.pdf

The part that's relevant to the video above is on page 11. It's actually a very successful application of math to classical mechanics to predict something one wouldn't expect to happen.

 

[Snake Plissken]

This is a fun video. It's mathematically described by Euler's laws of motion.

Weird

 

[TimeFlipper]

This is a fun video. It's mathematically described by Euler's laws of motion.

My head spins like that after over-indulging with the JB..

 

[Martian]

This is a fun video. It's mathematically described by Euler's laws of motion.

My head spins like that after over-indulging with the JB..

JB?