Rotating Solid Bodies in Microgravity
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1:37 ITS COMING RIGHT AT US!!!
tandis97 3 weeks ago
why is there a baby bottle on board the station
tevvytevv 1 month ago
@gmcglothern yes because it's filled with liquid.
Zagexi 1 month ago
is the fresh egg the one unable to spin stably along its long axis?
gmcglothern 1 month ago
He should have pointed out the bubbles in the water bottles. They were critically important in allowing the water to slosh around and dissipate energy. If they weren't present, the conversion of the rotation to the axis with the greatest moment of inertia wouldn't have been nearly as rapid.
ApolloWasReal 2 months ago
@B19Dav3 The most stable axis for a non-rigid body like one filled with a viscous or bubbly fluid is the one with the greatest moment of inertia, and that's usually its shortest one. The axis across the water bottle is shorter than the longitudinal axis about which it initially spins. The book spins most stably around the short axis through the pages.
ApolloWasReal 2 months ago
@Vei2aC Right about which egg is which, but that's not the reason. The raw egg contents can jiggle around and dissipate energy, and that's crucial for causing the change in spin axis because it involves losing energy. An absolutely rigid object will spin smoothly about any axis because there's no mechanism to change it.
ApolloWasReal 2 months ago
disagree with the book not spinning stabily 0:20, It's stable, its just rotating on two axis, much like how an asteroid tends to 'tumble'
zorb2000 3 months ago
InerTIA! It will spin along its axIS!
andzlou 3 months ago
dare them to spin a sphere of water just fast enough that it forms a disk
goodwolf359 3 months ago