Main Forum Page

The Gyroscope Forum 
21 February 2019 15:04

Welcome to the gyroscope forum. If you have a question about gyroscopes in general,
want to know how they work, or what they can be used for then you can leave your question here for others to answer.
You may also be able to help others by answering some of the questions on the site.

Question 
Asked by: 
Blaze 
Subject: 
Could this be the reason that mass movement happens? 
Question: 
This is a just a thought experiment and I welcome any input that may be out there. Someone may already know this or may have gone through this same thought process already.
As we know, in steady state precession on an overhung gyro, the weight of the spinning wheel is transferred to the pivot. So that means if you put a scale under the pivot when the gyro is precessing you should be able to measure the total weight of the assembly.
If a dead weight of the same mass were moving around the pivot at the same speed, there would be an easily measurable horizontal force on the pivot but that doesn’t occur with a precessing gyro. So, could it be that mass movement occurs in an overhung gyro be BECAUSE the total weight of the gyro is effectively all on the pivot? In other words, it is as if the wheel were actually sitting perfectly still and perfectly balanced on the pivot and not actually moving around the pivot. We know that the wheel has mass, and can see that it is moving around the pivot but that movement does not create a horizontal force on the pivot because the spinning wheel is in effect “just sitting on top of the pivot”?
That would then mean that IF you could somehow weigh the spinning mass while it is precessing (impossible to do of course) you would get a zero weight?
Your thoughts are welcome.
Blaze

Date: 
13 May 2012

report abuse


Answers (Ordered by Date)

Answer: 
Blaze  13/05/2012 02:42:34
  I meant to post this in the propulsion section. I will ask this again in the propulsion section. If you have any answers, pleas answer there, not here.
Blaze

Report Abuse 
Add an Answer >> 
