Final answer:
The question asks for shear and bending-moment diagrams for a beam, maximum values of shear and bending moment, and internal forces at a specific point. The problem-solving process involves calculating reactions, setting up equilibrium equations, and finding the points of zero shear. However, due to the lack of specific beam and loading data, numerical answers cannot be provided.
Step-by-step explanation:
The student's question relates to the creation of shear and bending-moment diagrams for a beam with an applied load and finding the maximum values of shear and bending moment. Additionally, the student seeks to determine the internal forces and moments at a specific point D on the beam. Typically, this involves calculating reactions at supports, using section cuts to evaluate shear and moment equations, and finding points of zero shear for maximum bending moments.
While the provided references include examples of forces on structures and elements such as bridges, power lines, and cranes, the exact details necessary to answer the student's question are not provided. The use of equilibrium equations (sum of forces and moments equal to zero) and geometric relationships is crucial in solving these types of problems in civil and mechanical engineering.
To find the maximum absolute values of shear and bending moment, one would calculate the reactions at the supports, cut a section at an arbitrary distance 'x' from one of the supports, and set up equilibrium equations to express shear and moment as functions of 'x'. The location of zero shear can be found where the derivative of the bending moment equation equals zero. Without the specific information on beam loading and geometry, the student cannot be provided with numerical answers.