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equation of motion
(redirected from Equations of motion)

   Also found in: Acronyms, Wikipedia 0.01 sec.
equation of motion [i′kwā·zhən əv ′mō·shən]
(fluid mechanics)
One of a set of hydrodynamical equations representing the application of Newton's second law of motion to a fluid system; the total acceleration on an individual fluid particle is equated to the sum of the forces acting on the particle within the fluid.
(mechanics)
Equation which specifies the coordinates of particles as functions of time.
A differential equation, or one of several such equations, from which the coordinates of particles as functions of time can be obtained if the initial positions and velocities of the particles are known.
(quantum mechanics)
A differential equation which enables one to predict the statistical distribution of the results of any measurement upon a system at any time if the initial dynamical state of the system is known.


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The authors explore the need for quantum mechanics and its physical basis to discuss representation theory, equations of motion, bound states of simple systems, symmetries and conservation laws, angular momentum, approximation methods, the three-body problem and quantization of radiation fields.
The simplicity of the double pendulum model, its apparent accuracy, and the ease in deriving and solving the associated equations of motion were the benefits of the this modeling approach which outweighed any potential loss in representation or accuracy and since the non-circular aspect of the hub path was not considered an important component of the golf swing.
 
 
 
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