How Does Precession Keep a Spinning Bicycle Wheel Upright?

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    Precession
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Discussion Overview

The discussion revolves around the mechanics of a rotating bicycle wheel and how it maintains its upright position when held at one side of the axle. Participants explore the forces acting on the wheel and the concept of precession in this context.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks to understand the dynamics of a rotating bicycle wheel, specifically how it does not fall over when held at one side of the axle.
  • Another participant describes the forces acting on the wheel, stating that the top of the wheel wants to move left while the bottom wants to move right, and questions whether this understanding is correct.
  • A later reply confirms the previous participant's description of the forces as being accurate.
  • Links to external resources are provided for further exploration of gyroscopic physics.

Areas of Agreement / Disagreement

There is some agreement on the description of the forces acting on the wheel, but the overall understanding of precession and its implications remains partially explored and not fully resolved.

Contextual Notes

The discussion does not delve into the mathematical details of precession or the specific conditions under which the described behavior occurs, leaving some assumptions and definitions unaddressed.

cragar
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I am trying to understand how a rotating bicycle wheel doesn't fall over when you hold it on one side of the axle . I read a thing and it says , the top of the wheel wants to go to the left and the bottom of the wheel want to go right but when the wheel rotates these forces appose because that part of the wheel is now in a new place ,
is this correct , any input will be much appreciated .
http://science.howstuffworks.com/gyroscope2.htm
 
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cragar said:
I am trying to understand how a rotating bicycle wheel doesn't fall over when you hold it on one side of the axle .


http://www.cleonis.nl/physics/phys256/gyroscope_physics.php"

Cleonis
http://www.cleonis.nl
 
Last edited by a moderator:
cragar said:
the top of the wheel wants to go to the left and the bottom of the wheel want to go right but when the wheel rotates these forces appose because that part of the wheel is now in a new place ,
is this correct , any input will be much appreciated .

That is exactly right.
 
Thanks for he answers and the videos .
 

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