What are the forces acting on the objects in each diagram?

Analysis of Forces:

• Diagram a): Shows an object on a surface. The forces indicated are 'сила трения' (friction force) acting horizontally, and implicitly, the weight of the object acting downwards and the normal force from the surface acting upwards.
• Diagram б): Shows an object on a surface. The force indicated is 'вес тела' (weight of the body), which is the force of gravity acting downwards. Implicitly, the normal force from the surface acts upwards.
• Diagram в): Shows an object on a surface. The forces indicated are 'сила реакции опоры' (support reaction force) acting upwards, and implicitly, the weight of the object acting downwards.

Summary: The diagrams illustrate different forces acting on objects, including friction, weight, and normal force, each labeled in Russian.