The principal of virtual work for any system of coplanar forces acting on a rigid body. Force in three dimension
■■■The principal of virtual work for any system of coplanar forces acting on a rigid body::-
If a system of coplanar forces acting on a rigid body keep the body in equilibrium, and if the body be given any arbitrary infinitesimal virtual displacement in the plane of the forces,consistent with the geometrical condition of the system,then the Algebraic sum of the virtual world done by the forces is zero.
Conversely, if the Algebraic sum of the virtual work done by the forces is zero for every arbitrary infinitesimal virtual displacement of the body in the plane of the forces,consistent with the geometrical conditions of the system,then the system is in equilibrium.
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If a system of coplanar forces acting on a rigid body keep the body in equilibrium, and if the body be given any arbitrary infinitesimal virtual displacement in the plane of the forces,consistent with the geometrical condition of the system,then the Algebraic sum of the virtual world done by the forces is zero.
Conversely, if the Algebraic sum of the virtual work done by the forces is zero for every arbitrary infinitesimal virtual displacement of the body in the plane of the forces,consistent with the geometrical conditions of the system,then the system is in equilibrium.
Follow the. PDF..
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