Rotational energy or angular kinetic energy is kinetic energy due to the rotation of an object and is part of its total kinetic energy. Looking at rotational energy separately around an object's axis of rotation, the following dependence on the object's moment of inertia is observed: where is the angular velocity is the moment of inertia around the axis of rotation is the kinetic energy The mechanical work required for or applied during rotation is the torque times the rotation angle. The instantaneous power of an angularly accelerating body is the torque times the angular velocity. For free-floating (unattached) objects, the axis of rotation is commonly around its center of mass. Note the close relationship between the result for rotational energy and the energy held by linear (or translational) motion: In the rotating system, the moment of inertia, I, takes the role of the mass, m, and the angular velocity, , takes the role of the linear velocity, v. The rotational energy of a rolling cylinder varies from one half of the translational energy (if it is massive) to the same as the translational energy (if it is hollow). An example is the calculation of the rotational kinetic energy of the Earth. As the Earth has a sidereal rotation period of 23.93 hours, it has an angular velocity of 7.29×10−5 s−1. The Earth has a moment of inertia, I = 8.04×1037 kg·m2. Therefore, it has a rotational kinetic energy of 2.14×1029 J. Part of the Earth's rotational energy can also be tapped using tidal power. Additional friction of the two global tidal waves creates energy in a physical manner, infinitesimally slowing down Earth's angular velocity ω. Due to the conservation of angular momentum, this process transfers angular momentum to the Moon's orbital motion, increasing its distance from Earth and its orbital period (see tidal locking for a more detailed explanation of this process). (Wikipedia).
Is It Spinning? We MUST Adjust!!!
Using PHYSICS To Calculate The Rotational Kinetic Energy Of A Sphere!! #Mechanical #Engineering #RotationalMotion #College #NicholasGKK #Shorts
From playlist Mechanical Engineering
Physics 8.5 Rotational Kinetic Energy (3 of 19) Rolling Solid Disk
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the total kinetic energy of a rolling solid disk and % of total energy of rotational kinetic energy of a rolling solid disk R=0.3m, M=2kg, and v=10m/s. Next video can be seen at: https://youtu.b
From playlist PHYSICS 8.5 ROTATIONAL KINETIC ENERGY
Physics 8.5 Rotational Kinetic Energy (2 of 19) Rotating Spoked Wheel
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the rotational kinetic energy of a spoked wheel of R=0.4m, M=5kg, m(spoke)=1kg and omega=4pi rad/s. Next video can be seen at: https://youtu.be/2z4VRu6g6Dw
From playlist PHYSICS 8.5 ROTATIONAL KINETIC ENERGY
Physics 8.5 Rotational Kinetic Energy (6 of 19) Comparing Rotational and Transitional K.E.
Visit http://ilectureonline.com for more math and science lectures! In this video I will compare rotational K.E. And translational K.E. of a 4kg object spinning at v=2m/s at a radius=1.4m from the center. Next video can be seen at: https://youtu.be/zncdHO5w6tU
From playlist PHYSICS 8.5 ROTATIONAL KINETIC ENERGY
Kinetic Energy: Example Problems
This video gives an explanation of kinetic and contains several examples for calculating kinetic energy, mass and velocity using the kinetic energy equation. Kinetic energy is the energy an object possesses due to its motion. If an object is in motion then it has kinetic energy. It is als
From playlist Kinetic Energy, Potential Energy, Work, Power
Physics 8.5 Rotational Kinetic Energy (13 of 19) P.E. Converted to Rotational K.E. 2
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the v(final)=? of a m=5kg mass. Next video can be seen at: https://youtu.be/uDbLR3Fz9lo
From playlist PHYSICS 8.5 ROTATIONAL KINETIC ENERGY
Physics 8.5 Rotational Kinetic Energy (1 of 19) Rotating Solid Disk
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the rotational kinetic energy of a solid wheel of R=20cm, M=4kg, and omega=5rev/s. Next video can be seen at: https://youtu.be/pKXqE3NNQ18
From playlist PHYSICS 8.5 ROTATIONAL KINETIC ENERGY
You (Probably) Haven't Been Told About the Second Type of Kinetic Energy
How can we calculate the rotational kinetic energy of any object? We will look at how this kinetic energy relates to angular speed (or angular velocity) and the moment of inertia of the object. On this channel, I've not properly discussed rotational kinetic energy. In addition to this, I'
From playlist Classical Physics by Parth G
Rotational Power, Work, Energy, Torque & Moment of Inertia - Physics Problems
This physics video tutorial provides a basic introduction into rotational power, work and energy. Rotational Power is equal to the net torque multiplied by the moment of inertia of the system. Rotational work is torque multiplied by angular displacement. Rotational work is also equal to
From playlist New Physics Video Playlist
الميكانيك التقليدي (إم آي تي) 19: دوران الأجسام الصلبة، القصور الذاتي الزاوي، النجوم النيوترونية
MIT المحاضرة التاسعة عشرة من مساق "الميكانيك التقليدي" من جامعة "إم آي تي" للبروفيسور والتر لوين وهي عن: دوران الأجسام الصلبة، القصور الذاتي الزاوي، نظرية المحاور المتوازية والمتعامدة، الطاقة الحركية الدورانية، الحذافات، النجوم النيوترونية، النجوم النابضة بالإضافة للفيديو هناك ملفات مرفقة
From playlist 8.01 Arabic Subtitles
AP Physics 1 review of Torque and Angular momentum | Physics | Khan Academy
In this video, David quickly explains each torque and angular concept and does a sample question for each one. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/review-for-ap-physics-1-exam/ap-physics-1-concept-review/v/ap-physics-1-review-of
From playlist Review for AP Physics 1 exam | AP Physics 1 | Khan Academy
Lec 19: Rotating Rigid Bodies, Inertia, and Axis Theorems | 8.01 Classical Mechanics (Walter Lewin)
Rotating Rigid Bodies, Moments of Inertia, Parallel Axis and Perpendicular Axis Theorem. The moment of inertia for a rigid body around an axis of rotation is introduced, and related to its rotational kinetic energy. Flywheels can be used to store energy. Planets and stars have spin rotatio
From playlist 8.01 Physics I: Classical Mechanics, Fall 1999 (Complete Lectures by Walter Lewin)
8.01x - Lect 19 - Rotating Objects, Moment of Inertia, Rotational KE, Neutron Stars
Rotating Rigid Bodies - Moment of Inertia - Parallel Axis and Perpendicular Axis Theorem - Rotational Kinetic Energy - Fly Wheels - Neutron Stars - Pulsars Lecture Notes, Flywheel Technology: http://freepdfhosting.com/5e0ffb03a1.pdf Assignments Lecture 19 and 20: http://freepdfhosting.com/
From playlist 8.01x - MIT Physics I: Classical Mechanics
Moment of Inertia Introduction and Rotational Kinetic Energy Derivation
The concept of kinetic energy applied to a stationary, rotating wheel is used to define Moment of Inertia and derive Rotational Kinetic Energy. Moment of Inertia is demonstrated. Want Lecture Notes? https://www.flippingphysics.com/moment-of-inertia.html This is an AP Physics 1 topic. 0:00
From playlist AP Physics 1 - EVERYTHING!!
Thermodynamics and Chemical Dynamics 131C. Lecture 05. The Equipartition Theorum.
UCI Chem 131C Thermodynamics and Chemical Dynamics (Spring 2012) Lec 05. Thermodynamics and Chemical Dynamics -- The Equipartition Theorum -- View the complete course: http://ocw.uci.edu/courses/chem_131c_thermodynamics_and_chemical_dynamics.html Instructor: Reginald Penner, Ph.D. Licens
From playlist Chemistry 131C: Thermodynamics and Chemical Dynamics
Physics 7C. Classical Physics. Lecture 12.
UCI Physics 7C: Classical Physics (Fall 2013) Lec 12. Classical Physics View the complete course: http://ocw.uci.edu/courses/physics_7c_classical_physics.html Instructor: Daniel Whiteson, Ph.D. License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info More courses at http:/
From playlist Physics 7C: Classical Physics.
Physics 8.5 Rotational Kinetic Energy (7 of 19) A Solid Disk Rolling in a Circle
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the total K.E. of a solid rolling disk of r=0.3m, m=4kg spinning at omega=2pi rad/s at a radius=2m from the center. Next video can be seen at: https://youtu.be/QEIGdmKf35Y
From playlist PHYSICS 8.5 ROTATIONAL KINETIC ENERGY
Rotational kinetic energy | Moments, torque, and angular momentum | Physics | Khan Academy
Keep going! Check out the next lesson and practice what you’re learning: https://www.khanacademy.org/science/physics/torque-angular-momentum/torque-tutorial/v/rolling-without-slipping-problems In this video David explains what rotational kinetic energy is and how to calculate it. Watch t
From playlist Torque and angular momentum | Physics | Khan Academy