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Rotational Kinetic Energy |
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Written by supaktra
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Monday, 02 April 2012 12:06 |
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ที่มา : www.youtube.com Upload by MIT
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 rotational kinetic energy, and the Crab Nebula pulsar is presented as a spectacular example.
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Last Updated on Monday, 02 April 2012 12:10 |
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Written by Nuntaya
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Monday, 26 March 2012 12:02 |
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ที่มา : www.youtube.com Upload by MIT
This lecture reviews selected concepts previously covered in lectures 6 through 15. Professor Lewin covers work-energy theorem, pendulum energy, simple harmonic oscillators, Newton's Law of Universal Gravitation, resistive forces, and finally collisions and conservation of momentum.
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Last Updated on Tuesday, 27 March 2012 16:08 |
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Elastic and Inelastic Collisions |
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Written by Nuntaya
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Monday, 26 March 2012 11:46 |
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ที่มา : www.youtube.com Upload by MIT
In this lecture Professor Lewin covers elastic and inelastic collisions, including a discussion on center of mass and internal inergy. He concludes with a Newton's Cradle demonstration, soliciting an analytical proof of his demo showing a lineup of colliding balls.
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Last Updated on Tuesday, 27 March 2012 16:09 |
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Change of Momentum, Impulse, Rockets |
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Written by Nuntaya
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Monday, 26 March 2012 11:56 |
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ที่มา : www.youtube.com Upload by MIT
The momentum of individual objects can change in a variety of ways. Professor Lewin covers a number of topics in this lecture, including impulse and thrust. An analogy is drawn between the force felt by the target of a tomato thrower, the reaction force felt by the thrower, and the propulsion (thrust) of a rocket.
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Last Updated on Tuesday, 27 March 2012 16:09 |
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Collisions and the Center of Mass |
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Written by Nuntaya
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Monday, 26 March 2012 11:34 |
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ที่มา : www.youtube.com Upload by MIT
Momentum and its conservation during collisions is introduced. Kinetic energy can decrease or increase during collisions. When kinetic energy is conserved, we call it an elastic collision.
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Last Updated on Tuesday, 27 March 2012 16:10 |
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