Final answer:
To determine the stress in the frame of a coping saw at points A and B due to a 40 N tension, one must draw a free-body diagram, apply static equilibrium equations, and consider the geometry of the frame, which affects the distribution of stress. However, without specific information on the geometry and location of points A and B, we can't provide an exact numerical answer.
Step-by-step explanation:
The problem presented is related to the stress analysis of the frame of a coping saw, particularly at points A and B. To solve this, we must consider the tension applied to the saw's blade and analyze the resulting stresses in the saw's frame. The tension is provided as 40 N, which will influence the stress state at the points of interest.
First, to tackle such a problem, we would start by drawing a free-body diagram to visualize the forces acting on the saw's frame. In reality, the stresses at points A and B will depend on the geometry of the frame and the exact locations where the tension is applied. Given that the tensions at A and B are internal forces within the structure of the coping saw, we need to apply principles of static equilibrium, namely ΣFx = 0 and ΣFy = 0. We need more information about the geometry of the saw and the positions of points A and B to provide a precise answer.
Given this problem seems to be more of a conceptual nature rather than a detailed stress analysis, a common assumption would be that the forces at points A and B are symmetrical and that the frame is in static equilibrium under the tension applied by the blade. Each point would experience a force that is a combination of horizontal and vertical components due to the tension in the blade.