Final answer:
In a physics context, the wire should rest at a 30° angle with the vertical at the end of a step bend to maintain proper tension for supporting the telephone pole. Equal tension is achieved when the angles are the same on either side of the pole.
Step-by-step explanation:
The question seems to be related to the principles of physics, particularly concerning the tension in wires and support systems. When dealing with the end of a step bend in a guy wire for a telephone pole, it's important to ensure that the wire creates the necessary angle to provide adequate support while maintaining the proper tension.
If the wire is attached at an angle of 30° to the vertical, as described in Figure 5.24, it indicates that the proper tension can be achieved if the wire is at this specified angle from the vertical axis of the pole.
Additionally, Figure 4.17 which addresses a similar tension problem implies that the angle affects the tension, as well as potential bending and compression of supporting structures.
In the case of the telephone pole at a 90° bend in a power line, the wire should rest in such a way that it maintains this 30° angle with the vertical to ensure that the tension remains proportional on both sides of the pole.