What materials should be used to construct a launch cable?

The construction of a launch cable for a Skycoaster must prioritize strength, durability, and resilience under tension. Steel is a commonly used material in these applications due to its high tensile strength, making it capable of withstanding substantial forces exerted during the operation of the Skycoaster. Copper, while not typically used for structural components like cables, is sometimes integrated for its conductivity in electrical systems. Thus, the combination of copper and steel aligns closely with the need for a robust and reliable launch cable.

Other materials mentioned in the options might not meet the necessary safety and performance standards. Plastic and nylon are generally not strong enough for the tension requirements of a launch cable, while aluminum and brass may not provide the same level of reliability under heavy loads. Wood does not possess the structural integrity needed for such applications, and metal alone, without the appropriate alloy or complementary material, may not offer the necessary strength either. These factors solidify the choice of copper and steel as the optimal selection for constructing a launch cable in this context.