MES Math Q/A 71: What is the Conservation of Angular Momentum?

https://play.3speak.tv/embed?v=mes/n1eley41

The law of conservation of angular momentum states that the total angular momentum of a system is constant whenever the net external torque on that system is zero. The law does not require the system (or its parts) to be rigid. That is why a figure skater spins faster when she pulls her arms in, and why a spinning solid that crumbles no longer rotates as a single object: the same total angular momentum is then carried by the motions of the fragments about the original center of mass.

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September 16, 2026 Wednesday at 10:00 AM PDT

#math #physics #science #angularmomentum #gyroscope

Timestamps (Generated by Grok AI)

0:00 Intro, audio check & going live
2:00 Website rebuild, Hive/Telegram mirroring
3:30 Melissa Doi 9/11 call analysis
5:00 Live coding site features (text size, tools, ads)
19:00 OpenAI Navier-Stokes / AI agents discussion
39:00 Ryan Bannister article & angular momentum intro
1:09:00 WTC debris movement (lateral, not fountain)
1:13:30 Conservation of angular momentum — rigid body vs. fragments
1:17:30 Critique of Ryan, Norman, Fetzer & “spooks”
1:26:00 Fetzer Zoom Q&A breakdown
1:42:00 Animations of a spinning object crumbling
1:48:00 Physics demo: angular momentum after disintegration
2:00:00 Site updates, copyright claim, monetization
2:13:00 Wrap-up

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