Precession Definition and 259 Threads

I am trying to figure out which way a spinning dinner plate (idealized as a disk) precesses when you toss it in the air. I can figure out the rate of precession in terms of the spin rate and the angle the spin axis makes with the precession axis. I believe it is \Omega_{pr} \cos{\theta} = 2...

And this phenomenon also occurs in neutrons?

Precession for me is one of the most confusing and interesting concepts in physics so far, I've thought about it a lot and I still don't have it all figured out. Here's an interesting question: Consider a gyroscope that has the axle in a horizontal position and spinning so that the angular...

i know many of the viewers will disregard this message, but to anyone out there who is knowledgeable in ancient wisdom i humbly ask: regarding astrology from a scientific perspective, i understand that the tilt of the Earth is changing approximately 1 degree per 70 years, and this in turn...

hi. not sure if this belongs in here, so sorry in advance for any trouble caused. i am in a bit of a predicament with a physics assessment of mine; i need to know the mathematical relationships between the precessional frequency, the couple (or torque, as i have read it called) and the angular...

Ok, I'm using Beer and Johnston's engineering Mechanics/Dynamics book for class, and i don't particularly enjoy it's lack of explanation for the following problem: The graphic shows a bullet flying to the right with the x coordinate pointing along its long axis and the y-axis perpendicular...

We know that the Earth is precessing. http://www.crystalinks.com/precession.html We also know that the Earth has a fluid outer core and a solid inner core. How would the core(s) react on that precession movement?

My problem involves the precession of the perihelion of Mecury F sub g = - (GMm)/r^2 * (1 + a/r) where a << r I proved in previous parts d^2r/dt^2 - r*(dtheta/dt)^2 = -GM/r^2 * (1 + a/r) [eqn 1] and r* d^2theta/dt^2 + 2*dr/dt*dtheta/dt = 0 I also used u(theta) = 1/r(t) to turn eqn 1 to...

In 1995 Richard Muller et al proposed the existence of a twin star of the sun, Nemesis. This would expain the cyclic mass extinctions. To date there seems to be little substantiation for the existence of Nemesis and the only remaining option is: find it. That may be happening here...