Which statement is true regarding polyester and nylon ropes?

Nylon ropes are known for their superior ability to handle shock loads compared to polyester. This characteristic is primarily due to nylon's elasticity, which allows it to stretch under tension. When a load is applied, the energy is absorbed through this stretch, reducing the impact force that is transmitted to the system. This makes nylon particularly effective in dynamic situations, such as in rescue operations, where sudden forces can occur due to fall incidents.

Polyester, on the other hand, has less stretch and therefore does not absorb shock loads as effectively. While polyester is more resistant to abrasion and UV degradation, its lower elasticity means that it transmits shock loads more directly than nylon. This difference in shock absorption is crucial in rope rescue operations, where the potential for falls and sudden forces necessitates equipment that can better mitigate these risks.

Understanding these properties is essential for selecting the right type of rope for rescue scenarios, as the ability to handle shock loads directly influences the safety and effectiveness of rescue operations.