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The shear force and bending moment diagrams have been plotted:

- The **Shear Force (V)** diagram shows a linear decrease due to the distributed load, with a sudden drop at the location of the point load.
- The **Bending Moment (M)** diagram shows a quadratic curve, with the maximum moment occurring at the fixed end.

### Next step:
We now need to compute the **normal stress** at point B, using the bending moment at the fixed end and the geometric properties of the beam's cross-section.

Let's calculate the moment of inertia (\( I \)) for the rectangular cross-section and use it to find the normal stress at point B.The **normal stress** at point B in the most critical section (fixed end) is approximately **6.75 MPa** (Mega Pascals).

This stress is due to the bending moment and the location of point B relative to the neutral axis of the beam.

### Would you like further details or have any questions?

Here are 5 related questions to expand on the topic:
1. How would the normal stress change if point B were located closer to the neutral axis?
2. What is the significance of the neutral axis in stress calculations?
3. How does the moment of inertia affect the stress distribution in the beam?
4. Could we calculate the shear stress in the beam, and how would it compare to the normal stress?
5. How would the diagrams change if the point load were located at the midspan rather than the free end?

#### Tip:
The location of maximum bending stress is always at the points farthest from the neutral axis, so knowing the cross-sectional shape is crucial for structural analysis.

Graficar los diagramas V, M y determinar el esfuerzo normal en el punto B de la sección más peligrosa de la viga mostrada en la figura.

Learn how to graph the shear force and bending moment diagrams for a cantilever beam under a distributed and point load. Calculate the normal stress at point B in the most critical section. This problem involves beam theory, shear force, bending moments, and normal stress calculations. Suitable for advanced engineering students.

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