Mechanics Mechanics Acoustic or sonic lubrication occurs when sound (measurable in a vacuum by placing a microphone on one element of the sliding system) permits vibration to introduce separation between the sliding faces. This could happen between two plates or between a series of particles. The frequency of sound required to induce optimal vibration, and thus cause sonic lubrication, varies with the size of the particles (high frequencies will have the desired, or undesired, effect on sand and lower frequencies will have this effect on boulders). ...more on Wikipedia about "Acoustic lubrication"
Adiabatic shear band is a term used in physics, mechanics and engineering for a weak region of an object stressed under high strain rates. ...more on Wikipedia about "Adiabatic Shear Band"
Apparent motion is used in at least two senses. First, it is used to refer to the motion of an object observed by someone who may also be moving relative to some rest frame. It is often used in this way in astronomy to describe planetary motions as seen by an observer on Earth. Second, it is used to refer to the perceived motion of an object when all that has been presented to the eyes is a series of stills. This is the principle that makes movies and TV possible. ...more on Wikipedia about "Apparent motion"
The Atwood machine (or Atwood's machine) was invented in 1784 by Rev. George Atwood as a laboratory experiment to verify the mechanical laws of uniformly accelerated motion. Atwood's machine is a common classroom demonstration used to illustrate principles of physics, specifically mechanics ...more on Wikipedia about "Atwood machine"
A banked turn is the term used to describe a car riding along a circle with inclined edges. The angle at which a turn is banked refers to the angle of incline of the given path. The benefit of such a structure is that there are forces other than that of friction to keep the car on its designated path. Banked turns also have applications to aviation. ...more on Wikipedia about "Banked turn"
Biomechanics is the research and analysis of the mechanics of living organisms. Aristoteles might be considered the first biomechanicist. He wrote the first book called "De Motu Animalium" - On the Movement of Animals. He not only saw animals' bodies as mechanical systems, but pursued such questions as the physiological difference between imagining performing an action and actually doing it. (Read more about the history of Biomechanics in A Genealogy of Biomechanics .) The research and analysis can be carried forth on multiple levels, from the molecular, wherein molecular biomaterials such as collagen and elastin are considered, to the macroscopic level, all the way up to the tissue and organ level. Some simple applications of Newtonian Mechanics can supply correct approximations on each level, but precise details demand the use of Continuum Mechanics. ...more on Wikipedia about "Biomechanics"
Bush mechanics is an Australian slang expression which refers to somebody who out of necessity and with inmediate available materials, is able to solve practical problems using sometimes untraditional and inventive techniques. Generally an inventive technique is required due to the lack of proper resources or the other constraints in solving the problem using traditional means. ...more on Wikipedia about "Bush mechanics"
In physics, Carroll's paradox arises when considering the motion of a rigid rod. Considered one way, the angular momentum stays constant; considered in a different way, it changes. ...more on Wikipedia about "Carroll's paradox"
Centrifugal force stems from Latin centrum "center" and fugere "to flee". ...more on Wikipedia about "Centrifugal force"
centripetal force (from Latin centrum "center" and petere "tend towards"). This term refers to the effect of the force (namely, to maintain the circular motion of the object); the origin of the centripetal force can be anything that causes a force to exist. An object can travel in a circle with a constant speed only if the net force acting on it is a centripetal force. (And if the object is traveling in a circle with a varying speed, the component of the net force along the radius is the centripetal force.) ...more on Wikipedia about "Centripetal force"
The coefficient of restitution or COR of an object is a unit fraction value representing the proportion of kinetic energy left in an object in the instant after it has bounced. An object with a very low coefficient of restitution, such as a cannonball, will therefore lose most of its energy in the impact, while an object with a high coefficient of restitution, such as a rubber ball, will retain most of its energy. ...more on Wikipedia about "Coefficient of restitution"
In physics, collision means the action of bodies striking or coming together ( touching). Collisions involve forces (there is a change in velocity). Collisions can be elastic, meaning they conserve energy and momentum, inelastic, meaning they conserve momentum but not energy, or totally inelastic (or plastic), meaning they conserve momentum and the two objects stick together. ...more on Wikipedia about "Collision"
Cyclic stress in engineering refers is an internal distribution of forces (a stress) that changes over time in a repetitive fashion. As an example, consider one of the large wheels used to drive an aerial lift such as a ski lift. The wire cable wrapped around the wheel exerts a downward force on the wheel and the drive shaft supporting the wheel. Although the shaft, wheel, and cable move the force remains nearly vertical relative to the ground. Thus a point on the surface of the drive shaft will undergo tension when it is pointing towards the ground and compression when it is pointing to the sky. Because the wheel rotates many times during the use of the machine, this cycle of tension and compression is repeated many times — hence the name cyclic stress. ...more on Wikipedia about "Cyclic stress"
In mechanics, a diaphragm is a sheet of a semi-flexible material anchored at its periphery and most often round in shape. It serves either as a barrier between two chambers, moving slightly up into one chamber or down into the other depending on differences in pressure, or as a device that vibrates when certain frequencies are applied to it. ...more on Wikipedia about "Diaphragm (mechanics)"
In an automobile and other wheeled vehicles, a differential is a device, usually consisting of gears, for supplying equal torque to the driving wheels, even as they rotate at different speeds. ...more on Wikipedia about "Differential (mechanics)"
In elementary physics and linear kinematics, the equations of motion are five equations that apply to bodies moving linearly (that is, one dimension) with uniform acceleration. (In advanced physics, the Euler-Lagrange equations, differential equations derived from the Lagrangian, are also called "equations of motion" . The following article is about elementary physics only.) ...more on Wikipedia about "Equation of motion"
A Foucault pendulum, or Foucault's pendulum, named after the French physicist Léon Foucault, was conceived as an experiment to demonstrate the rotation of the Earth; its action is a result of the Coriolis effect. It is a tall pendulum free to oscillate in any vertical plane and ideally should include some sort of motor so that it can run continuously rather than have its motion damped by air resistance. The first Foucault pendulum exhibited to the public was in February 1851 in the Meridian Room of the Paris Observatory. A few weeks later, Foucault made his most famous pendulum when he suspended a 28-kg bob with a 67-metre wire from the dome of the Panthéon in Paris. ...more on Wikipedia about "Foucault pendulum"
Drawing a free body diagram is a method often used by physicists working out kinetics or other mechanics problems to show all the mechanical vector forces acting on the given free body (or bodies) at any given time. Doing so can make it easier to understand the forces, and moments, in relation to one another and suggest to the physicist the proper trigonometry to apply in order to find the solution to the problem. ...more on Wikipedia about "Free body diagram"
Frictional force in mechanics is the force which opposes the relative motion of the body. It is oppositely directed to the motion of the body. ...more on Wikipedia about "Frictional force"
Geomechanics is the study of the engineering behaviour of soil and rock. The greek prefix Geo means Earth, and Mechanics looks at the behaviour of physical systems under the action of forces. ...more on Wikipedia about "Geomechanics"
A gravity train is a theoretical means of transportation intended to go between two points on the surface of a sphere, following a straight tunnel that goes directly from one point to the other through the interior of the sphere. ...more on Wikipedia about "Gravity train" Visit again www.shortopedia.com shortopedia
Hoop stress is mechanical stress applied in a direction perpendicular to the radius of the item in question. Along with axial stress and radial stress, it is a component of the stress tensor in cylindrical coordinates. ...more on Wikipedia about "Hoop stress"
An ideal machine is a machine that cannot exist in reality for a number of reasons: ...more on Wikipedia about "Ideal machine"
Impetus has several possible meanings: ...more on Wikipedia about "Impetus"
Implosion is a reverse explosion that concentrates matter and energy. Buildings are colloquially, though mistakenly, described to implode when demolished through explosives, causing them to collapse on themselves. Implosion is the inward collapse, the opposite of explosion. ...more on Wikipedia about "Implosion"
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