The physics of the “hardest move” in ballet – Arleen Sugano

In the third act of “Swan Lake”, the Black Swan pulls off a seemingly endless series of turns, bobbing up and down on one pointed foot and spinning around and around and around … thirty-two times. How is this move — which is called a fouetté — even possible? Arleen Sugano unravels the physics of this famous ballet move.

Lesson by Arlene Sugano, animation by Dancing Line Productions.

Stacked Ball Drop and Momentum

What happens when you drop a perfectly balanced stack of balls? And how is the result like a supernova? The classic momentum transfer demonstration, at the next level.

A big thank you to my nephews and niece Drew, Max and Whitney for creating the trampoline footage!
Thank you to the Vlogbrothers for sponsoring this video, to Kyle Kitzmiller for filming, and to Island School for providing the balls (ischool.org).
Music: YouTube
Space Images/animation: NASA

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Deflategate Physics: Why Would the Patriots Want to Let the Air Out? – World Science Festival

As Europe worries about the risks of deflation on the global economy, American football fans wonder about the ramifications of deflation on their beloved sport—and how a potentially deflated win might impact one team’s push to the Super Bowl. Continue reading