When Walter Lewin spins a bicycle wheel and suspends it by one end of its axle, it creates a striking demonstration of the conservation of angular momentum. As the wheel spins, it develops angular momentum—a vector quantity that resists changes in its orientation. Gravity tries to pull the wheel down, creating a torque. However, instead of the wheel falling, the torque causes its angular momentum vector to rotate, resulting in a slow circular motion known as gyroscopic precession. This phenomeno
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When Walter Lewin spins a bicycle wheel and suspends it by one en…
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Lec 19: Rotating Rigid Bodies, Inertia, and Axis Theorems | 8.01 Classical Mechanics (Walter Lewin)
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Lec 19: Rotating Rigid Bodies, Inertia, and Axis Theorems | 8.01 …
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𝗽𝗵𝘆𝘀𝗶𝗰𝘀 𝘅𝗽𝗹𝗮𝗶𝗻 | This video shows Professor Lewin's engaging explanation of torque Walter Lewin explains torque as the rotational version of force—the idea... | Instagram
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𝗽𝗵𝘆𝘀𝗶𝗰𝘀 𝘅𝗽𝗹𝗮𝗶𝗻 | This video shows Professor Lewin's engaging explanation of t…
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educationexplaning on Instagram: "Professor Walter Lewin demonstrates the gyroscope effect to show how a spinning object can resist changes to its orientation. When the gyroscope spins, its angular momentum keeps it stable, allowing it to balance or precess instead of falling under gravity. As Lewin explains, the faster the gyroscope spins, the stronger this stabilizing effect becomes, making it appear to defy gravity. This experiment clearly shows how the same physics is used in bicycles, airpl
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Quantum Physics | Cosmology | Astrophysics on Instagram: "Prof. Walter Lewin, the legendary MIT physicist, used some of the most visual and memorable demonstrations to teach core concepts — including thermal expansion. In this experiment, he shows how materials expand when heated and contract when cooled, revealing how temperature changes affect the atomic spacing inside solids. The setup is simple, but the lesson is powerful: even the most rigid materials are constantly in motion at the microsc
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Explain everything 🧠 on Instagram: "Walter Lewin’s horizontal motion experiment demonstrates a fundamental principle of classical mechanics: the independence of horizontal and vertical motion (inertia). In this experiment, a ball is launched vertically upward from a machine moving horizontally at constant velocity. Despite the machine’s motion, the ball falls back into it, illustrating that horizontal velocity does not affect vertical free fall. Unlike everyday intuition (where the machine migh
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Explain everything 🧠 on Instagram: "Walter Lewin’s horizontal motion …
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The Way Everything Works on Instagram: "Walter Lewin’s horizontal motion experiment highlights a cornerstone of classical mechanics: motion in different directions operates independently. In the demonstration, a ball is launched straight upward from a device that’s already moving at a steady horizontal speed. Even though the launcher continues moving forward, the ball drops back into it rather than falling behind, showing that sideways motion has no influence on how gravity pulls an object downw
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