Which of the following statements is true for shear force (SF) and bending moment (BM) diagram [where, w = weight per unit length]
1
Change in BM over a small length [dM] = Area of SF diagram under that length [Vdx]
2
Change in BM over a small length [dM] = Rate of change of SF under that length [dV / dx]
3
Rate of change of Change in BM over a small length [dM / dx] = Rate of change of SF under that length [dV / dx]
4
Change in SF over a small length [dV] is greater than area of loading diagram over that length [wdx]