Final answer:
The max bending moment in a beam is typically at the midpoint for a simply supported beam with a uniform load, but can vary with different support and load conditions.
Step-by-step explanation:
The statement that a bending moment is max in the middle of the beam can be both true and false. It is dependent on the conditions of the beam's supports and loading. For a simply supported beam with a uniform load, the bending moment will indeed be maximum at the midpoint of the beam. This is due to the bending moment being the product of the load and the distance from the support, reaching its peak where this distance is greatest, which is at the center in this case. However, if there are multiple loads or supports, the location of the maximum bending moment can vary. In engineering, the bending moment at any point along the beam can be calculated using statics principles and the appropriate formulas. The bending modulus mentioned in the reference is a property of material that resists bending, and it is included in calculations of bending moments and beam deflections.