Anti-Gravity Wheel?
Why Physics Stack Exchange recommends it
Physics Stack Exchange users link it when asking about gyroscopic precession and as a concrete example of a spinning wheel apparently defying gravity.
Recommended by 0 people across 0 different months, 2015 to 2020.
What it is
Veritasium's Derek Muller tries to lift a 19 kg spinning bicycle-style wheel over his head one-handed, recreating a demonstration by Professor Eric Laithwaite, who claimed it was 'light as a feather' and defied Newton's laws. The video shows what the experiment actually feels like, with a separate follow-up video explaining the gyroscopic precession behind it.
What people said
Cites Naho · 2015-05 · Physics Stack Exchange · on “Calculating the Precession”
This is the Anti gravity wheel [this video] video from Veritassium. I have a similar problem to calculate the forces on arm. How can I calculate the precession force pushing the arm vertically ? Lets assume that the angles between shaft and arm is 90° the angles between shaft and wheel is 90° The wheel properties are Mass - M wheel , Radius - R wheel , Speed(rpm) - V wheel , The length of shaft is L shaft , and mass is M shaft though to keep it simple we can ignore the mass of shaft.
Cites Smit Chaudhary · 2016-02 · Physics Stack Exchange · on “Which force acts as centripetal force on gyroscope?”
I think I have understood gyroscope in terms of angular momentum and how the torque of gravitational force moves it the way it does. Also I understand the direction in which it would move: What determines the direction of precession of a gyroscope? [LINK] And the working : [LINK] I saw a couple of videos about it: [LINK] [this video] Note how the wheel rotates around. So the Centre of Mass of the wheel goes around the wheel in a horizontal circle. Which force acts on the system of Rod and the Wheel that makes it perform circular motion? I see it analogous to a particle performing circular motion or a rod being rotated about one of its end (a compound system). Since the string attached would only
Cites user289661 · 2016-11 · Physics Stack Exchange · on “Why does Uranus not experience gyroscopic effect?”
As I understand, gyroscopic effect is when a body has multiple distinct axes of rotation. This video [this video] shows this effect when a body already rotating in one axis is made to rotate another axis perpendicular to the existing one. If the rotational axis of Uranus is perpendicular to its heliocentric revolution, why has this not had any apparent effect on the planet's orbit?
Cites User3141 · 2020-08 · Physics Stack Exchange · on “Anti-gravity wheel?”
So I was just watching some YouTube videos on a spinning wheel that seemed to "defy" gravity. The creator made two videos on it, the first showing the wheel, and the second with an attempt to explain it. There are the names of the videos: "Anti-Gravity Wheel?" [this video] by Veritasium "Anti-Gravity Wheel Explained" [LINK] by Veritasium It is the second video in particular that bothers me. It seems as if he can lift the wheel up over his head while it's spinning and precessing with ease, but when it's not spinning nor precessing, then he struggles to lift the weight over his head. He explains this as somehow the wheel "lifting itself" up as he forces it to precess faster than it's natural preces