What is Angular momemtum: Definition and 110 Discussions

Homework Statement Two discs of different radii and masses are kept on a smooth horizontal table and both are free to rotate about their fixed central vertical axis. One of them is given some angular velocity while other is stationary. The rims are brought in contact. There is friction between...

Two hollow spheres, both the mass and radius R M , which are rotating around a center of mass ( CM ) , with an initial period To, are kept distant from each other by an ideal wire with a distance of 8R. At a given instant a motor is driven by wrapping the wire and making the two spheres meet...

Homework Statement "Design an angular momentum demonstration. Back up your demo with a calculation(s)." I was given two cylinders with adjustable ball bearings inside, and will have access to an incline once in class (the cylinders are designed to roll down it). Homework Equations I...

btw, we can use symmetry arguments on all of these... a. For a particle in a state with known values of L^{2} and L_{z} with quantum numbers l and m, what is the expectation value of the angular momentum _vector_. I have a feeling this should be very easy and I'm not thinking hard enough...

Homework Statement A 100 g puck is attached by a length of string to a 500 g block of ice. The string passes through a hole in the centre of a horizontal, frictionless table, and, because it is revolving in a circle of radius 20 cm, the puck is able to support the ice. (Refer to attachment...

i don't know what a homework problem is...i don't go to school..all i know is concepts are cleared when you think about all concept's possibilities and it's application..here is yet another application of COM ND COAM... suppose a sphere rolling with angular speed $ and center of mass speed v...

Homework Statement First off, Thanks for taking the time to explain to me why how I'm looking at this scenario is incorrect! I already asked my professor about this, and while I certainly don't think he was incorrect in saying that the conservation of momentum laws prevent what I'm asking...

Identical spacecraft s A and B each of mass m are orbiting the Earth in different orbits...they both have the same perigee and at t=0 spacecraft A hits spacecraft B from behind before impact speed of A was V[a] and B was V and both a distance R from the centre of the earth After the...

I'm doing some reading on quantum mechanics and have a quick question about angular momentum. In the derivation of the eigen values of J (which is either L or S), it starts out like this: Jz (Pm) = hm (Pm) Where Pm is Phi sub m, h is h bar and m is the eigen value. (sorry my latex is a...

Seems easy enough - but could I get a check on this. Thanks Nautica A 1.8 m radius merry go round has a mass of 120 kg and is rotating with an angular velocity of .5 rev/s. What is its angular velocity after a 22 kg childs gets on its edge which was initially at rest? First, I...