In a physical system a
particle may be constrained to move on the surface of a sphere, a bead
on a wire, or gas molecules within a container. Similarly we can
recognize that entities in an organization may experience constraints
upon their actions that are not just the relation force applied by other
entities within the organization.
If the conditions of
constraint can be expressed as equations connecting the coordinates of
the particles (and the time) having the form
(3.15)
then the constraints
are said to be holonomic.
A bead on a wire and
most ecological constraints are holonomic. The gas in a container and a
maximum information processing capacity of an entity are nonholonomic,
because the equation relating the coordinates is an inequality and not
of the form of equation (3.15).
Constraints introduce
two types of difficulties in the solution of problems. First, the
coordinates are no longer all independent, since they are connected by
the equations of constraint. Second, the relation forces of constraint,
e.g., the relation force on the entity experiencing the constraint are
not known. They are among the unknowns of the problem and must be
obtained from the solution we seek.
In the case of
holonomic constraints, the first difficulty is solved by introducing
generalized coordinates. We have been considering a system of N
entities with N(N-1)/2 independent degrees of freedom. If there exist
holonomic constraints, expressed in k equations in the form of 8.15,
then we have (N(N-1)/2)-k degrees of freedom or independent
coordinates. This can be expressed with a new set of coordinates via
transformation equations.
…
(3.16)
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(C) 2005-2014 Wayne M. Angel.
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