A system of rigid bodies in the sense of this book may be any finite
number of rigid bodies interconnected in some arbitrary fashion by
joints with ideal holonomic, nonholonomic, scleronomic and/or rheonomic
constraints. Typical examples are the solar system, mechanisms in
machines and living mechanisms such as the human body provided its
individual members can be considered as rigid. Investigations into the
dynamics of any such system require the formulation of nonlinear
equations of motion, of energy expressions, kinematic relationships and
other quantities. It is common practice to develop these for each system
separately and to consider the labor necessary for deriving, for
example, equations of motion from Lagrange's equation, as inevitable. It
is the main purpose of this book to describe in detail a formalism which
substantially simplifies these tasks. The formalism is general in that
it provides mathematical expressions and equations which are valid for
any system of rigid bodies. It is flexible in that it leaves the choice
of generalized coordinates to the user. At the same time it is so
explicit that its application to any particular system requires only
little more than a specification of the system geometry. The book is
addressed to advanced graduate students and to research workers. It
tries to attract the interest of the theoretician as well as of the
practitioner.