Physics 141 Mechanics Yongli Gao Lecture 4 Motion in 3-D
... • You may not know it, but every atom/molecule in your body is oscillating. • For any system, there's at least one state that the system is of the lowest potential energy. This is a point of stable equilibrium, or the bottom of the valley in a potential vs. position curve. • If the system is of a sm ...
... • You may not know it, but every atom/molecule in your body is oscillating. • For any system, there's at least one state that the system is of the lowest potential energy. This is a point of stable equilibrium, or the bottom of the valley in a potential vs. position curve. • If the system is of a sm ...
Physics 201: Lecture 1
... the oscillator is a maximum The applied force and v are both proportional to sin ( t + ) The power delivered is F . v » This is a maximum when F and v are in phase Resonance (maximum peak) occurs when driving frequency equals the natural frequency The amplitude increases with decreased damping ...
... the oscillator is a maximum The applied force and v are both proportional to sin ( t + ) The power delivered is F . v » This is a maximum when F and v are in phase Resonance (maximum peak) occurs when driving frequency equals the natural frequency The amplitude increases with decreased damping ...
Unit 13: Periodic Motion
... o Periodic motion is motion that repeats itself in a definite cycle. It occurs whenever a body has a stable equilibrium position and a restoring force that acts when it is displaced from equilibrium. o Period is the time for one cycle. Frequency is the number of cycles per unit time. Angular frequen ...
... o Periodic motion is motion that repeats itself in a definite cycle. It occurs whenever a body has a stable equilibrium position and a restoring force that acts when it is displaced from equilibrium. o Period is the time for one cycle. Frequency is the number of cycles per unit time. Angular frequen ...
Line shapes - Center for Ultracold Atoms
... ration of the two states along the path between the coil. τ = `/α and T = L/α. The first line in this expression is just 4 times the probability of transition for a spin passing through one of the OFs (oscillating fields). All interference terms (which must involve T ) are contained in the second te ...
... ration of the two states along the path between the coil. τ = `/α and T = L/α. The first line in this expression is just 4 times the probability of transition for a spin passing through one of the OFs (oscillating fields). All interference terms (which must involve T ) are contained in the second te ...
Word - ASDL Community
... 2. What happens to the nucleus after B1 is turned off? 3. Suppose a wire coil is placed on the Y-axis. What happens in the wire coil as the magnetic field of the tipped nucleus is imparted on it? 4. Draw the current profile that would result in the wire coil on the X-axis as the tipped nucleus relax ...
... 2. What happens to the nucleus after B1 is turned off? 3. Suppose a wire coil is placed on the Y-axis. What happens in the wire coil as the magnetic field of the tipped nucleus is imparted on it? 4. Draw the current profile that would result in the wire coil on the X-axis as the tipped nucleus relax ...
Resonance
In physics, resonance is a phenomenon that occurs when a given system is driven by another vibrating system or external force to oscillate with greater amplitude at a specific preferential frequency.Frequencies at which the response amplitude is a relative maximum are known as the system's resonant frequencies, or resonance frequencies. At resonant frequencies, small periodic driving forces have the ability to produce large amplitude oscillations. This is because the system stores vibrational energy.Resonance occurs when a system is able to store and easily transfer energy between two or more different storage modes (such as kinetic energy and potential energy in the case of a pendulum). However, there are some losses from cycle to cycle, called damping. When damping is small, the resonant frequency is approximately equal to the natural frequency of the system, which is a frequency of unforced vibrations. Some systems have multiple, distinct, resonant frequencies.Resonance phenomena occur with all types of vibrations or waves: there is mechanical resonance, acoustic resonance, electromagnetic resonance, nuclear magnetic resonance (NMR), electron spin resonance (ESR) and resonance of quantum wave functions. Resonant systems can be used to generate vibrations of a specific frequency (e.g., musical instruments), or pick out specific frequencies from a complex vibration containing many frequencies (e.g., filters).The term Resonance (from Latin resonantia, 'echo', from resonare, 'resound') originates from the field of acoustics, particularly observed in musical instruments, e.g. when strings started to vibrate and to produce sound without direct excitation by the player.