Oscillatory Motion
Oscillatory Motion - Related Videos
07:56
Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
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Cited by 11 •
2017
The goal of the protocol is to create liquid crystalline polymer films that can mechanically oscillate under continuous light irradiation. We describe in great detail the conception of free-standing films, from the liquid crystal alignment method to the photo-actuation. The experimental protocol applied to prepare this material is broadly applicable.
11:26
Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Cited by 7 •
2014
Cerebral perfusion is maintained across a range of pressures via cerebral autoregulation. However, characterizing autoregulation requires prominent pressure fluctuations at regulated frequencies. The described protocol will show how oscillatory lower body negative pressure can generate pressure fluctuations to provide data for projection pursuit regression for quantification of the autoregulatory curve.
07:52
Hooke's Law and Simple Harmonic Motion
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2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA Potential energy is an important concept in physics. Potential energy is the energy associated with forces that depend upon the position of an object relative to its surroundings. Gravitational potential energy, which is discussed in another video, is the energy associated that is directly proportional to the height of an object above...
11:41
Kinematics and Projectile Motion
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2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA This experiment demonstrates the kinematics of motion in 1 and 2 dimensions. This lab will begin by studying motion in 1 dimension, under constant acceleration, by launching a projectile directly upward and measuring the maximum height reached. This lab will verify that the maximum height reached is consistent with the kinematic...
06:03
Motion-induced Blindness
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University One thing becomes very salient after basic exposure to the science of visual perception and sensation: what people see is a creation of the brain. As a result people may fail to see things, see things that are not there, or see things in a distorted way. To distinguish between physical reality and what people perceive, scientists use the term awareness to refer to what people perceive. To study awareness, vision scientists often...
FAQs
A restoring force or torque changes direction as the object moves to opposite sides of equilibrium, continually tending to reduce displacement. Inertia prevents the object from stopping at equilibrium, so it passes through that position and continues toward the other side. This interaction produces repeated motion rather than a single return, forming the mechanical basis of oscillation.
In simple harmonic motion, the restoring force is proportional to displacement from equilibrium. That proportional relationship produces sinusoidal changes in position and velocity, giving the motion a particularly regular pattern. Other oscillating systems may still move back and forth about equilibrium, but they do not necessarily follow this same proportional-force rule or sinusoidal behavior.
Position and velocity vary continuously as the system moves through its cycle. The object changes direction at the outer parts of its motion, while its passage through equilibrium marks a different stage of the cycle. In simple harmonic motion, both quantities change sinusoidally, allowing the system's timing and motion pattern to be described using frequency and related measures.
A useful analysis begins by locating the stable equilibrium position, then identifying the displacement and the restoring force or torque that acts when the system moves away from it. Observing repeated cycles reveals the motion's frequency and timing. Comparing the measured behavior with sinusoidal changes helps determine whether the system is reasonably described as simple harmonic motion.
These systems use different physical components, yet each can display repeated variation about an equilibrium condition. A pendulum and a spring provide mechanical examples, vibrating structures extend the idea to engineered systems, and electrical circuits show that oscillatory behavior is not limited to moving objects. Their comparison helps connect mechanics with broader physical models.
Oscillatory motion provides a basic model for understanding how repeated changes can support waves, resonance, and energy transfer. Vibrating structures can respond strongly under resonant conditions, while oscillatory behavior can also supply measurable signals for sensing technologies. Studying the motion therefore links an idealized physics model to structural behavior and practical measurement systems.