In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical quantity because it is a conserved quantity—the total angular momentum of a closed system remains constant. Angular momentum has both a direction and a magnitude, and both are conserved. Bicycles and motorcycles, frisbees, rifled bullets, and gyroscopes owe their useful properties to conservation of angular momentum. Conservation of angular momentum is also why hurricanes form spirals and neutron stars have high rotational rates. In general, conservation limits the possible motion of a system, but it does not uniquely determine it. The three-dimensional angular momentum for a point particle is classically represented as a pseudovector r × p, the cross product of the particle's position vector r (relative to some origin) and its momentum vector; the latter is p = mv in Newtonian mechanics. Unlike linear momentum, angular momentum depends on where this origin is chosen, since the particle's position is measured from it. Angular momentum is an extensive quantity; that is, the total angular momentum of any composite system is the sum of the angular momenta of its constituent parts. For a continuous rigid body or a fluid, the total angular momentum is the volume integral of angular momentum density (angular momentum per unit volume in the limit as volume shrinks to zero) over the entire body. Similar to conservation of linear momentum, where it is conserved if there is no external force, angular momentum is conserved if there is no external torque. Torque can be defined as the rate of change of angular momentum, analogous to force. The net external torque on any system is always equal to the total torque on the system; in other words, the sum of all internal torques of any system is always 0 (this is the rotational analogue of Newton's third law of motion). Therefore, for a closed system (where there is no net external torque), the total torque on the system must be 0, which means that the total angular momentum of the system is constant. The change in angular momentum for a particular interaction is sometimes called twirl, but this is quite uncommon. Twirl is the angular analog of impulse. (Wikipedia).
Teach Astronomy - Angular Momentum
http://www.teachastronomy.com/ Angular momentum is a concept related to linear momentum, only in this case the situation of an orbit. Any physical or mechanical object either in rotation or in an orbit can have its angular momentum calculated. The angular momentum is the product of the m
From playlist 03. Concepts and History of Astronomy and Physics
Physics - Mechanics: Angular Momentum (1 of 11) What is angular momentum? Basics
Visit http://ilectureonline.com for more math and science lectures! In this video I will review linear momentum and explains the basics of angular momentum.
From playlist MOST POPULAR VIDEOS
This physics video tutorial provides a basic introduction into angular momentum which is the product of an object's inertia and angular velocity. it also discusses the conservation of angular momentum and how it relates to torque. Angular Momentum Physics Problems: https://www.youtube.co
From playlist New Physics Video Playlist
8 AWESOME EXAMPLES Conservation of angular momentum!!!
In this video you can see eight different examples Conservation of angular momentum. Also i explain that the angular momentum of a system will be conserved as long as there is no net external torque. Both point objects and extended objects are covered along with several examples.
From playlist MECHANICS
Momentum and Angular Momentum of the Universe
Visualization of the conservation of the momentum and angular momentum of everything in the universe.
From playlist Physics
32.1 Angular Momentum for a Point Particle
MIT 8.01 Classical Mechanics, Fall 2016 View the complete course: http://ocw.mit.edu/8-01F16 Instructor: Dr. Peter Dourmashkin License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 8.01SC Classical Mechanics, Fall 2016
Momentum (1 of 16) An Explanation
This video gives a complete explanation of momentum. It also includes an example momentum problem. Momentum is a quantity of matter arising from its mass and velocity. The momentum of an object is directly proportional to its mass and velocity. Momentum is a vector quantity. Impulse is th
From playlist Momentum, Impulse, Inelastic and Elastic Collisions
054 - Angular Momentum In this video Paul Andersen explains rotating object have angular momentum. The angular momentum of a point object is the product of the distant from the center of rotation and the linear momentum. The angular momentum of an extended object is a product of the rot
From playlist AP Physics 1 Videos
32.2 Calculating Angular Momentum
MIT 8.01 Classical Mechanics, Fall 2016 View the complete course: http://ocw.mit.edu/8-01F16 Instructor: Dr. Michelle Tomasik License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 8.01SC Classical Mechanics, Fall 2016
Angular Momentum of Particles Introduction
The equation for the #AngularMomentum of a #PointParticle is built and visualized. Proof a point particle can have angular momentum is shown. The right-hand rule for angular momentum direction is shown. Want Lecture Notes? https://www.flippingphysics.com/angular-momentum-particles.html Thi
From playlist AP Physics 1 - EVERYTHING!!
Conservation of Angular Momentum Introduction and Demonstrations
Several demonstrations of #AngularMomentumConservation are shown using a rotating stool. The equations is also derived using Newton’s Second Law. Conservation of the direction of angular momentum is also demonstrated. Lecture Notes? https://www.flippingphysics.com/angular-momentum-conserva
From playlist AP Physics 1 - EVERYTHING!!
Lecture 7 | New Revolutions in Particle Physics: Basic Concepts
(November 13, 2009) Leonard Susskind discusses the theory and mathematics of angular momentum. Leonard Susskind, Felix Bloch Professor of Physics, received a PhD from Cornell University and has taught at Stanford since 1979. He has won both the Pregel Award from the New York Academy of
From playlist Lecture Collection | Particle Physics: Basic Concepts
Ball hits rod angular momentum example | Physics | Khan Academy
In this video David explains how a mass can have angular momentum even if it is traveling along a straight line. Then David shows how to solve the conservation of angular momentum problem where a ball hits a rod which can rotate. Created by David SantoPietro. Watch the next lesson: https:
From playlist Torque and angular momentum | Physics | Khan Academy
This video covers Section 9.6 of Cutnell & Johnson Physics 10e, by David Young and Shane Stadler, published by John Wiley and Sons. The lecture is part of the course General Physics - Life Sciences I and II, taught by Dr. Boyd F. Edwards at Utah State University. This video was produced
From playlist Lecture 9B. Rotational Dynamics
Angular Momentum Physics Practice Problems
This physics video tutorial provides a few examples and practice problems on angular momentum. It explains how to calculate the angular momentum and rotational inertia of a spinning disk in the first problem. In the second problem, it explains how to calculate the average torque acting o
From playlist New Physics Video Playlist
Momentum (3 of 16) Impulse, An Explanation
This video describes the relationship between momentum and impulse. A derivation of the momentum impulse equation is included as well as one example to help explain the relationship between impulse and momentum. If you apply a force over a period of time, then you will change the velocity
From playlist Momentum, Impulse, Inelastic and Elastic Collisions
Dynamics of rigid rotating bodies - Part 3 of 3 - Gyroscopes
Dynamics of rigid rotating bodies Part 1: Centre of Gravity, Moment of Inertia, Angular Momentum and Torque Part 2: Parallel Axis Theorem and consequences of part 1 Part 3: Gyroscopes
From playlist Classical Mechanics