taking moment about spring B, explain why is the tension in spring B not considered for the calculation

To explain why the tension in spring B is not considered for the calculation, we need to take a moment about spring B.

1. First, let's understand what taking a moment means. When we take a moment about a point, we are calculating the rotational effect of forces acting on an object with respect to that point.

2. In this case, we are considering the tension in spring B. The tension in a spring is a force that acts along the length of the spring, causing it to stretch or compress. However, since we are taking a moment about spring B, we are only concerned with the rotational effect of forces acting on the object at that specific point.

3. When we take a moment about spring B, we are looking at the forces that are causing the object to rotate around that point. These forces include the weight of the object and any other external forces acting on it.

4. The tension in spring B, although it is a force acting on the object, does not contribute to the rotational effect around spring B. This is because the tension in the spring acts along the length of the spring, not causing any rotation around spring B.

5. Therefore, when calculating the moment about spring B, we only consider the forces that are causing the object to rotate around that point, and the tension in spring B is not one of those forces.

In conclusion, the tension in spring B is not considered for the calculation of the moment about spring B because it does not contribute to the rotational effect around that point.