The fundamental equation of dynamics. Analytical statics
Constraint forces are the forces exerted at the points in the system when the constraints are mentally removed. Introducing into consideration the constraint forces we distinguish between two categories of forces acting at the points within the system, namely the constraint forces and the active (or prescribed) forces. The resultant of the constraint forces exerted at point M i is denoted by R i whereas that of the active forces is denoted by F i .
KeywordsEquilibrium Position Active Force Fundamental Equation Constraint Force Virtual Displacement
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