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This is the 6th part (out of 13) of the course on calculating support reactions in simply supported beams.
In this episode I will discuss the principle of force momentum (bending moment).I will show how the force acting on the arm of a force generates moment. I will also explain the principle of the pair of forces and interpret the unit of moment. I will present the above issues using an example of a wrench and force acting on the arm (length) of this wrench. I will also explain how to mark the moment in a point.
The concept of moment is crucial because it will appear practically in all the issues in connected with mechanics, mechanicsof materials and building mechanics.