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Chapter 5
Equilibrium of a Rigid Body

Conditions of Equilibrium
Equilibrium refers to a state where a rigid body is not subjected to any translational or rotational motion. This state is achieved when the force…
Support Reactions
A coplanar force system refers to a set of forces that all lie in the same plane and are subject to different reactions between the point of contact…
Internal Forces and Center of Gravity
Internal forces and the center of gravity are fundamental concepts in mechanics, playing a crucial role in understanding the behavior and stability…
Alternative Sets of Equilibrium Equations
When analyzing the behavior of structures, engineers often rely on the concept of equilibrium. This refers to the state where all forces and moments…
Two Force Member
The equilibrium of a two-force body is a particular case that is often encountered in practical applications. A two-force body is a rigid body that…
Three Force Member
A rigid body subjected to three forces acting at three points is known as a three-force member. These forces must have concurrent lines of action,…
Equations of Equilibrium in Three Dimensions
When analyzing structures or systems at rest, it is necessary to ensure they are in equilibrium. This is where the vector and scalar equations of…
Support Reactions in Three Dimensions
Support reactions in three dimensions help maintain the stability and equilibrium of various structures and systems. These reactions prevent the…
Constraints and Statical Determinacy
In structural engineering, the equilibrium of a system is not only determined by its equations of equilibrium but also with the help of constraints.…
An Instrumented Pull Test to Characterize Postural Responses
Impairment of postural reflexes, termed postural instability, is a common and disabling deficit in Parkinson's disease. To assess postural reflexes,…
Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
An experimental method for exploring the heat transfer characteristics of an axially rotating channel is proposed. The governing flow parameters that…
The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy
Intelligent robots are part of a new generation of robots that are able to sense the surrounding environment, plan their own actions and eventually…

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