Final answer:
The question involves the principles of statics in Physics, discussing the stability of a telephone pole at a 90° bend in a power line, which is maintained by attaching a guy wire. The guy wire provides tension, securing the pole against bending forces, and it's typically attached using a cable, rope, or chain.
Step-by-step explanation:
The subject in question relates to Physics, specifically to the principles of statics, which is a branch of Mechanics. When a telephone pole is situated at a 90° bend in a power line, the stability of the pole is of concern. To maintain the pole's stability, a guy wire is attached which provides tension and helps it resist bending forces due to the power lines.
By attaching a guy wire at an angle of 30° with the vertical, it helps to stabilize the telephone pole and ensures it remains upright and can endure the forces exerted by the bend in the power line. This guy wire needs to be anchored securely to the ground or some other stable point and is typically done using a line of cable, rope, or galvanized chain to prevent it from snapping or detaching.
The physics involved in stabilizing a telephone pole with a guy wire include understanding forces and vectors, analyzing the components of tension in the guy wire, and considering the impacts of angles and the forces of gravity.