The provided image contains text and diagrams related to structural mechanics, specifically about beams. There are no explicit questions asked in the image. Therefore, I cannot provide a specific answer to a question. However, I can describe the content of the image: Figure 4.1 depicts a simple beam supported by two supports: one is a pin support (left side, labeled R_y) and the other is a roller support (right side, labeled R_x and R_z, indicating horizontal and vertical reactions). A vertical force F is applied to the beam. The text above describes a beam supported in this manner and mentions its types. Figure 4.2 shows a cantilever beam, which is fixed at one end (left side) and free at the other. The fixed support has a vertical reaction force R and a moment M. The text mentions a beam fixed at one end, called a cantilever. If you have a specific question related to these diagrams or the text, please provide it.

Analysis of the Image Content:

The image displays two diagrams illustrating different types of beams used in structural mechanics, along with accompanying Russian text.

Figure 4.1: Simple Beam

This figure shows a beam supported by two different types of supports:

• Left Support: A pin support, indicated by a circle and lines, which provides vertical reaction force (labeled R_y).
• Right Support: A roller support, depicted as a triangle on rollers, which provides both horizontal (R_x) and vertical (R_z) reaction forces.
• Applied Load: A downward vertical force labeled 'F' is applied to the beam.

The accompanying text describes a beam supported in this manner and mentions its common classifications.

Figure 4.2: Cantilever Beam

This figure illustrates a cantilever beam:

• Fixed Support (Left Side): The beam is rigidly fixed into a wall, indicated by hatching. This support provides a vertical reaction force (labeled R) and a moment (labeled M).
• Free End (Right Side): The beam extends horizontally from the fixed support.

The text associated with this figure describes a beam fixed at one end, commonly referred to as a cantilever.

Note: No specific questions were asked in the provided image. The analysis above describes the visual and textual content presented.