Spinning Sphere travelling along axis of rotation in fluid

AI Thread Summary
The discussion centers on the effects of a spinning sphere moving through a fluid along its axis of rotation. Participants draw parallels to the stabilization seen in sports balls and bullets, suggesting that spin may enhance stability in motion. Questions arise regarding whether spinning affects velocity or momentum, with some speculation that it might reduce friction between the sphere and the fluid. There are references to experimental evidence indicating that spinning objects can travel farther and faster, hinting at potential fluid dynamics influences. Overall, the conversation explores the complex relationship between rotation, fluid interaction, and motion dynamics.
traveller444
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What effect does rotation have on a sphere moving through a fluid (liguid or gas) when traveling along the axis of rotation? The simplest being an up or down motion.
 
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Isn't this similar to what happens when you throw a football or baseball or other round(ish) object? And possibly why a bullet is made to spin when its fired. Would this cause the sphrere to be more stable in its motions? I don't know, I'm wondering myself now.
 
Yes, exactly. Like rifling for a bullet or a stabilizing spin for a football. However, I'm wondering more about whether it would affect velocity or general momentum.
 
traveller444 said:
Yes, exactly. Like rifling for a bullet or a stabilizing spin for a football. However, I'm wondering more about whether it would affect velocity or general momentum.

I don't know, but I would guess that it would not unless the spinning somehow caused there to be less friction on the object.
 
Drakkith said:
I don't know, but I would guess that it would not unless the spinning somehow caused there to be less friction on the object.

That's just it! Does the spinning cause the fluid to move in a way that DOES decrease the friction? Or does the object somehow acquire more energy from...somewhere?

There are some instances of experiments where an object with spin(travelling along its axis of spin) travels farther and faster than one without...so I am wondering, is that due to some sort of fluid dynamics?
 

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