Spinning Definition and 558 Threads

The linear velocity of rotation of a spinning ball of the gravitational field matter (gfm) is faster at its edge than in its central part. According to Einstein's theory of the spinning disk, the spacetime curvature at the edge of the gfm ball is larger than that in the central part; and...

I heard about a technique where mercury or some other liquid is spun in a dish until it assumes a parabolic shape. Would this work in space? Could a flat membrane of liquid metal do just as well? It could be liquified by an electric current and start out flat like soapy water in a bubble wand...

What is the angular momentum of a spinning solid sphere of mass 'm', equitorial velocity 'v', and radius 'r'? (The mass of the sphere being uniformly distributed and the spin being along a single axis only) I can't figure this out because the common textbook formula for angular momentum...

Wheels and Crazy Spinning Things! For the illustration of the following model, go to http://www.corniceventures.com/images/wheels.JPG If the 2 wheels ("B1" and "B2") are the same diameter (40 inches) and are rolling forward at 4 miles per hour...Would belts "D1" and "D2" rotate hubs "C1"...

My heads spinning help! As usual I've left my work to the end of the holiday and after 2 hours of physics questions my head is in a spin... i have a cou[ple of simple quetions where i know the soluion isobvious but i can't get my had around the answers... would anyone be able to point me in the...

First off I will step out and say that Astromomy and Cosmology is not my bag! I am a Computer techie through and through but the other day I was on space.com and saw the coolest thing and was wondering where I can read more on it or if anyone here knew more about it They were talking about a...

Here's the problem and I'm close to the answer, but I guess close isn't good enough on a Physics exam. A spinning solid disk, rotating with angular velocity Wo, is put down on a level surface. It slides and rolls until it reaches an angular velocity W at which it rolls without sliding. Show...

what keeps the Earth spinning? or more exactly, what drives the planets in our solar system to spin and rotate around the sun? what will happen if Earth stop spinning?