All Questions
Tagged with torque precession
26
questions
0
votes
3
answers
154
views
What happens if we prevent gyroscope to precess?
If we apply some torque to spinning wheel in a vacuumed space in body frame y axis, wheel try to precess due to gyroscopic effect but it will be prevented by obstacles as seen from picture,
what will ...
- 21
0
votes
1
answer
43
views
Is this an example of precession, or is its motion more complicated?
Let's say there is a solid cylinder floating in space and rotating about its axis of symmetry at rate $\omega$. At time t = 0 a force constant in magnitude is applied to the bottom of the cylinder. ...
- 1,800
3
votes
1
answer
54
views
Free Body Diagram of Precessing Top
Consider a heavy, symmetric top spinning on a table, initially inclined at some angle from the vertical. Assuming this angle is fixed, it follows that the weight $\textbf W$ and normal force $\textbf ...
- 67
0
votes
1
answer
62
views
Choice of axis in analysis of gyroscopic precession
In many demonstrations of analysis of gyroscopic precession, the analysis goes on by choosing two axes, one about which angular momentum is calculated, another about which torque of gravity is ...
- 428
0
votes
0
answers
22
views
Why does the period of precession of a gyroscope have to be way larger than it's spin period so that it's motion can be modelled?
Mathematically, torque induced gyroscopic precession may be modelled with the following equation:
$$
{\displaystyle T_{\mathrm {p} }={\frac {4\pi ^{2}I_{\mathrm {s} }}{\ mgrT_{\mathrm {s} }}}={\frac {...
1
vote
3
answers
379
views
Confusion about the Spinning Top
Consider the following symmetric spinning top with a fixed point on the horizontal surface.
I have two questions concerning its motion:
let $\underline{\Omega}$ denote the precession angular ...
- 402
0
votes
0
answers
27
views
Is it possible to change the speed at which a wheel is freely spinning by moving only its axle?
Suppose we have a wheel spinning on a perfectly lubricated axle. Is it possible to change its angular velocity about that axle, by moving only the axle?
Due to the wheel's symmetry about the axle's ...
- 143
0
votes
1
answer
89
views
Why does a rotating mass generate a torque on an attached object?
In this video, we see a little toy vehicle with two wheels that is unstable by itself. However, when an attached gyroscope is running (a rotating mass) it stabilizes itself.
When the mass starts to ...
- 737
0
votes
2
answers
1k
views
Why does a precessing wheel remain horizontal, instead of flipping?
Suppose I have a wheel with an axle, such that one side of the axle is tied to a rope. I'm initially holding wheel in such a way, that the radius vectors of the wheel are perpendicular to a board. I ...
- 1,791
0
votes
2
answers
211
views
Intuitive derivation for the precession rate of a spinning wheel
The derivation of the precession rate of a wheel hanging from a rope, as shown below usually involves taking
the total torque acting on the system and equating it to the change in angular momentum.
...
- 410
1
vote
1
answer
154
views
Derivation of precession rate of a wheel gyroscope [closed]
I searched on the web and all I could find is the precession rate of a spinning top. But what I want is the derivation of the precession rate of a wheel hanging from a rope, as shown below:
which is ...
- 410
1
vote
3
answers
653
views
Gyroscope precession: angular momentum and torque
I recently bought a Gyroscope toy online and was keen to find out the Physics behind this fun little "gravity-defying" toy. I did some online research and found a force diagram of a ...
- 11
0
votes
1
answer
249
views
Why does the gyroscope oscillate a little when it just starts to precess?
I was reading up on why before starting the precession the gyroscope "goes down a little", (Link at the bottom). In this paper, while looking at the graphs I observed that before reaching ...
- 13
0
votes
1
answer
876
views
Precessional motion of a spinning top
In Feynman's book, when he talks about the motion of a rapidly spinning top, he mentions:
"When we apply a Torque to a rapidly spinning top, the direction of the precessional motion is in the ...
- 453
3
votes
3
answers
425
views
Is the torque on a gyroscope a conventional virtual force perpendicular to rotation?
So I am having some difficulty understanding gyroscopic precession. I understand that mathematically by convention torque is perpendicular to the force and so is angular momentum but surely that force ...
- 169