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force The customary sign conventions are to say the normal is positive if it creates tension, the shear force is positive if it causes the beam segment to rotate clockwise, and a bending moment is positive if it causes the beam to bend concave upward. Oppositely-acting loadings are considered negative. Figure 3 of4 > WB G-SYNC
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engineering   Mechanical-Engineering   
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Li31 43tX 11 5321 859 2- で1,0 2 V183 1214 667

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