Use support reactions, load jumps, slopes, and continuity to draw shear-force and bending-moment diagrams.
Center Point Load
A 12 kN point load sits at midspan on a 6 m simply supported beam.
| Point | x (m) | V (kN) | Remove |
|---|---|---|---|
| P1 | |||
| P2 | |||
| P3 | |||
| P4 |
Segment Shapes
Current target
Use 4 key points and 3 segment shapes. The dashed trace is a faint reference grid for scale; the red trace is your answer.
Build the shear and moment diagrams for a 12 kN load at midspan.
Ready to check
ΣF_y = 0ΣM_A = 0dV/dx = -w(x)dM/dx = V(x)Point load: shear jumps, moment stays continuous