#Angular Momentum

When you spin a fully expanded Hoberman Sphere, it rotates slowly. But if you collapse it mid-spin, the rotation speeds up dramatically. First we need to know that momentum measures how difficult it is to stop a moving object and it depends on the object's mass and velocity: ▪︎ Linear momentum refers to straight line motion (a tennis ball is easier to stop than a bowling ball). ▪︎ Angular momentum applies to spinning objects and depends on mass and angular velocity (a coin flip is easier to stop than a spinning carousel) Then, with the Hoberman Sphere, this change of speed can be explained with the conservation of angular momentum: in a closed system, angular momentum (L) must stay conserved. The equation is "L = I × ω" ▪︎ I = moment of inertia (how mass is spread out) ▪︎ ω = angular velocity (how fast it spins) When the sphere is expanded, its mass is farther from the center, so the moment of inertia (I) is larger and the angular velocity (ω) is smaller. When the sphere is collapsed, its mass is now closer to the center, so (I) gets smaller, and (ω) increases in order to keep the angular momentum (L) constant. --- 💡 Learn More: Conservation of Angular Momentum - Britannica https://www.britannica.com/science/conservation-of-angular-momentum [Sources] (🎞 Utah State University - Physics Demos) (🎼 particles (slowed) - villiam lane) (✍️ Description) 1. Hoberman Designs – Mechanical Expansion Models. 2. University Physics Volume One. Conservation of Angular Momentum. --- Follow @science.sbmedia to keep the curiosity alive! 🪐🔭 #AngularMomentum #HobermanSphere #NeutronStars #PhysicsInMotion #MomentOfInertia #SpinningObjects #ScienceExplained #STEM #Astrophysics #ConservationLaws

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Torque explained. Every Engineer should understand this concept 🧫 . . 🎥 Prof. Walter Lewin . #angularmomentum #torque #physics #engineeringstudents #engineeringprinciples #mechanicalengineeringstudent #electricalengineeringstudent #civilengineeringstudent #engineeringconcepts #dynamics #mechanicaldesign #mechanicalengineering #mechanicalengineer #mechanicalproblems #mechanicaleducation #physicsclass #physicsteacher #physicsmajor #physicslab #physicsfacts #physicslovers #physicslover #physicsisfun #mechanical_engineering #mechanicalproject

Demonstration of Law of conservation of Angular Momentum.... Follow:@diversephysics for more #physics #physicist #physicslovers #science #education #cosmos #mechanics #motion #angularmomentum #momentofinertia #conservationlaw #STEM #stemeducation #nature #naturallaws #physicstricks #physicsmystry #physicsmagic #PhysicsExplained #physicsisfun #insta #instareels #trendingreels #viralreels

What does the conservation of angular momentum really mean? Don't worry, I marked off myself for lack of units, 10 points at least. #science #interesting #physics #stem #momentum

Angular momentum is the measure of how strongly something spins. It’s the rotational cousin of linear momentum — born from an object’s moment of inertia and its angular speed L = Iω This quiet law is why a spinning bicycle stays upright, why a ballet dancer spins faster when pulling their arms in, and why motion, once set, resists change. For a single particle, angular momentum comes from direction and motion: L = r × p — position crossed with momentum. From spiraling storms on Earth to neutron stars spinning faster than imagination, angular momentum is the universe remembering how it began to turn #AngularMomentum #PhysicsReels #ScienceExplained #SpaceScience #Astrophysics #PhysicsFacts #STEMContent #ScienceTok #CosmicLaws #UniverseExplained #NeutronStars #RotationalMotion #LearnOnInstagram #ScienceEducation #SpaceReels angular momentum, neutron star, neutron star rotation ,space science, physics shorts, astrophysics, universe facts, science facts, space shorts, cosmic physics, rotation in space, conservation of angular momentum, astronomy shorts, science reel, physics explained, space knowledge, viral science, educational shorts, space reels, universe explained

In this lecture, the legendary Professor Walter Lewin dives into the Cross Product (or vector product). Unlike the dot product, which results in a scalar, the cross product of two vectors produces a brand-new vector that is perpendicular to both. This isn't just math on a chalkboard; it is the foundation for understanding how the universe moves. We use the cross product to calculate: Torque: The rotational force that turns a wrench or opens a door. Angular Momentum: Why a spinning ice skater speeds up when they pull their arms in. Magnetic Forces: How charged particles move through magnetic fields. Mastering the "Right-Hand Rule" to find the direction of that resulting vector is a rite of passage for every physics student. It reminds us that in science, direction is just as important as magnitude. 🌌 #Physics #VectorCalculus #WalterLewin #STEMEducation #classicalmechanics

When a bicycle wheel spins fast, it resists changes to its orientation. That resistance is due to the conservation of angular momentum, the same principle behind how gyroscopes work. As long as no external torque is applied, the direction of the angular momentum vector remains fixed, which is why a spinning object seems to “fight” being turned. Angular momentum is a fundamental quantity in physics that describes the rotational equivalent of linear momentum. When an object spins, like a figure skater or a planet, it has angular momentum and just like linear momentum, the angular momentum is also conserved. This principle was formalized in the 18th century by physicists like Leonhard Euler and further explored in the 19th century by scientists including Joseph-Louis Lagrange and William Rowan Hamilton. They showed that as long as no external torque is applied, the total angular momentum of a system remains unchanged. ---- 💡 Learn More: Angular Momentum - Britannica https://www.britannica.com/science/angular-momentum [Sources] (🎞 unlimiteddknowledge) (🎞 MIT Lectures - Walter Lewin) (🎼 Untitled#13 - glwzbll) (✍️ Description) 1. Serway, R. A., & Jewett, J. W. (2018). Physics for Scientists and Engineers. 2. NASA. (2023). Physics and Motion in Space. --- Follow @science.sbmedia to keep the curiosity alive! 🪐🔭 #AngularMomentum #GyroscopePhysics #SpinningWheel #ConservationLaws #RotationalMotion #PhysicsInAction #STEMEducation #MomentOfInertia #GyroscopicEffect #ScienceExplained #NeutronStars #PhysicsConcepts

Momentum explained. now with captions #physics #gcse #science #teacher #school #rappingteacher #momentum #velocity #kgm/s #lamborgini #exams #revision #gcse #stem #school #science #combinedsciencegcse #physics

Angular momentum is a property of rotating objects and is defined as the product of an object's moment of inertia and its angular velocity. The principle of "conservation of angular momentum" states that if no external torque acts on a system, its angular momentum remains constant. This means that when the radius of a rotating object decreases, its rotational speed (angular velocity) must increase to conserve angular momentum, and vice versa. For example, think of a figure skater spinning. When they extend their arms outward (increasing their radius), their rotation slows down. When they pull their arms in (decreasing the radius), they spin faster. This happens because the moment of inertia decreases with a smaller radius, so the angular velocity increases to keep the angular momentum constant. This principle also explains why smaller objects (with less radius) can rotate faster and why larger rotating systems (with larger radii) tend to rotate more slowly unless an external force speeds them up. Angular momentum is indeed central to understanding these changes in rotation. #angularmomentum #physics #science

Explained Angular momentum and Torque #angular #torque #physics #science #physicsfacts #physicsmagic #sciencefacts

Angular Momentum of a Particle About the Centre A particle moving in a circular path has angular momentum about the centre. Since r ⟂ v, L = mvr. As the particle moves, both r and v change direction, but their cross product remains along the same axis. Hence, magnitude of L is constant and its direction is always along the axis of rotation. #physics #angularmomentum #neet #jee #physicswithasif