고체역학 (Gere) — Shear Forces and Bending Moments: Problem 4.5-21

4.5-21 The beam $ABC$ shown in the figure is simply supported at $A$ and $B$ and has an overhang from $B$ to $C$. Draw the shear-force and bending-moment diagrams for beam $ABC$. Note: Disregard the widths of the beam and vertical arm and use centerline dimensions when making calculations. Given data from the figure: - Vertical arm at support $A$ of height $h = 1.0\text{ m}$. - Horizontal force $P_1 = 4.0\text{ kN}$ acting to the left at the top of the vertical arm. - Vertical downward force $P_2 = 8.0\text{ kN}$ at the end of the overhang $C$. - Horizontal force $P_3 = 4.0\text{ kN}$ acting to the right at point $C$. - Span $L_{AB} = 4.0\text{ m}$, overhang $L_{BC} = 1.0\text{ m}$.