1. Research object and content of theoretical mechanics

2. Research methods of theoretical mechanics

3. The learning purpose of theoretical mechanics

4. Learning methods of theoretical mechanics

5. philology

The world is material, material is moving, and the whole world is the eternal moving material world.

The ancient Greek philosopher Traklick said: People can't step into the same river at the same time.

Forms of material movement: physical phenomena such as luminescence, fever and electromagnetic field, chemical changes and human thinking activities.

Mechanical motion: the change of the position of an object in space with time.

Theoretical mechanics: the science of studying the general laws of mechanical motion of objects.

The research object and content of this course is the mechanical motion of macroscopic objects whose speed is much less than the speed of light.

The theoretical basis is the basic theorem summarized by Galileo and Newton.

Relativity and quantum mechanics theory should be used to analyze and study the motion of basic ions whose speed is close to the speed of light. )

The research objects and contents of theoretical mechanics include statics, kinematics and dynamics (statics and dynamics can be regarded as special cases of kinematics).

Statics mainly studies the conditions that the force should meet when the stressed object is balanced; At the same time, the analysis method of force on objects and the simplification of force system are also studied.

Kinematics only studies the motion of objects from the geometric point of view, and does not study the reasons that cause the motion of objects.

Dynamics is to study the relationship between the motion of a stressed object and the acting force.

Research methods of theoretical mechanics (from theory to practice and then to practice): 1. The research process of celestial motion shows the law of human understanding of the objective world.

2. The law of gravitation (Ptolemy's geocentric theory, Copernicus's three laws of planetary motion, Heliocentrism and Kepler, Einstein's general theory of relativity).

Life practice, production practice, scientific experiment 1, analysis, induction, summary of concepts and axioms.

2, abstract simplification, logical reasoning, mathematical deduction theorem, conclusion, equation.

3. Practical application and practice test

The purpose of theoretical mechanics is to solve engineering problems.

Example: Tucker Ma Haixia Bridge (the American suspension bridge is nicknamed "the dancing Getty", a dancing dinosaur) collapsed, and the spacecraft met and docked with paper cutters. ...

Learning methods of theoretical mechanics 1. Proficient in theory; Clear concept; Skilled method 2. Enough practice.

philology

1. Theoretical Mechanics, 8th edition, edited by Harbin Theoretical Mechanics Teaching and Research Section.

2. The Complete Solution of Theoretical Mechanics Exercises edited by Sun Yicheng Yanping and Zhang Li.

3. Popular Mechanics Series Higher Education Press

4. Mathematical Principles of Natural Philosophy was published by Newton Peking University Publishing House.