There is a spring that assemblage with arbitrarily numbered nodes shown in Figure A. A force, Fs, is applied at node 3 in the x direction. Each spring constant is 20 kN/m. Determine: a) Global stiffness matrix b) Nodal displacements c) Forces in each element d) Reaction forces at node 1 and 5 20 kN/m 20 kN/m 20 kN/m 5 kN 20 kN/m

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Center of Gravity and Centroid

The term center of gravity indicates the position or location of a point about which the whole weight of a body or system is supposed to be concentrated, which means the whole weight of the body or system works through this point. It is closely related to mass distribution. For all positions of the body, the center of gravity would be a single point.