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Overview of Mechanics

by Ron Kurtus (revised 17 April 2018)

Mechanics is a field of Physics consisting of the study of the motion of objects and in some cases the forces involved, according to the various physical laws. Those laws change when the speed of objects are near the speed of light, as well as when the size of the objects and the distances they travel are on the atomic scale.

The study of Mechanics can be divided into classifications, according to speed and size. They are: Classical Mechanics, Relativistic Mechanics, Quantum Mechanics, and Quantum Field Theory.

Questions you may have include:

This lesson will answer those questions. Useful tool: Units Conversion



Classification by size and speed

Mechanics can be classified according to the size of the object and its speed.

Mechanics classifications by size and speed

(Creative Commons © by Surachit)

Classical Mechanics

Classical Mechanics (also called Newtonian mechanics) concerns objects that range from everyday to very large in size. Also, their speed is normal and much less than the speed of light.

The field can be subdivided into Kinematics, Dynamics, and Statics.

(See Classical Mechanics for more information.)

Relativistic Mechanics

Relativistic Mechanics concerns objects of normal to extremely large in size and are traveling close to the speed of light. At such high speeds, physical laws change.

Quantum Mechanics

Quantum Mechanics concerns objects that are extremely small in size but are traveling much less than the speed of light. At very small sizes or short distances, space becomes quantized.

Quantum Field Theory

Quantum Field Theory concerns objects that are extremely small in size and are traveling close to the speed of light.

Summary

Mechanics is is the study of the motion of objects and the forces involved, according to the various physical laws. Those laws change when the speed of the objects nears the speed of light, as well as when the size of the objects and the distances they travel are on the atomic scale.

The classifications, according to speed and size are: Classical Mechanics, Relativistic Mechanics, Quantum Mechanics, and Quantum Field Theory.


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Resources and references

Ron Kurtus' Credentials

Websites

Mechanics - Wikipedia

Classical mechanics - Wikipedia

Mechanics outline - HyperPhysics

Physics Resources

Books

Top-rated books on Physics of Mechanics


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Overview of Mechanics



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