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Concepts In Statics
Mofidul Islam
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Naturwissenschaften, Medizin, Informatik, Technik / Physik, Astronomie
Beschreibung
Statics is the branch of mechanics concerned with the analysis of loads (force, torque/moment) on physical systems in static equilibrium, that is, in a state where the relative positions of subsystems do not vary over time, or where components and structures are at a constant velocity. When in static equilibrium, the system is either at rest, or its centre of mass moves at constant velocity. By Newton's first law, this situation implies that the net force and net torque (also known as moment of force) on every part of the system is zero. From this constraint, such quantities as stress or pressure can be derived. The net forces equalling zero is known as the first condition for equilibrium, and the net torque equalling zero is known as the second condition for equilibrium. When all the forces that act upon an object are balanced, then the object is said to be in a state of equilibrium. Force is the action of one body on another. A force tends to move a body in the direction of its action. The action of a force is characterized by its magnitude, by the direction of its action, and by its point of application. Thus force is a vector quantity, because its effect depends on the direction as well as on the magnitude of the action. Forces are classified as either contact or body forces. The present book is a concise and up-to-date work including all aspects of this subject. Every effort has been made in the representation manner in this book so that the students do not get confused while going through this book.
