MMAN1300 : MMAN1300 Statics Notes

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Document Summary

Force as a vector: force has magnitude, direction and point of action, forces can be resolved using cos and sine rules, addition/subtraction of vectors, i and j vectors, parallelogram law or triangle method, resolution of a vector breaking up a vector into its components like parallelogram law in reverse, fx force is denoted by i vector, fy force is denoted by j vector, to add several vectors resolve into i and j components, add all x components and all y components. Reactions at supports and connections: roller allows rotation and translation in x, not y (cid:224)r y reaction, hinge allows rotation but not translation in x and y direction(cid:224) r x and ry reactions, smooth surfaces have normal reaction only, no friction, rough surfaces have frictional forces, pin connections have rx and ry and moments, built in/fixed supports have rx and ry and bending moments. Mo = r x f1 + r x.