Free body的意思

"Free body" is a term used in physics and engineering, particularly in the context of static and dynamic analysis of structures and systems. It refers to an object or body that is considered to be free from the constraints of other bodies or structures, meaning it is analyzed in isolation, without considering the forces or interactions from other objects.

In a free body diagram, which is a graphical representation of the forces acting on an object, the object in question is depicted as if it were detached from the system and all the forces acting on it are shown. This allows engineers and physicists to analyze the forces acting on a single body without the complexity of the entire system.

Free body diagrams are commonly used in the study of statics, dynamics, and strength of materials. They are essential tools for understanding the forces involved in structures, machines, and mechanisms, and for solving problems related to equilibrium, motion, and stability.