To prevent damage to the device or rope, light use pulleys should not exceed which tensile strength without permanent damage?

The correct choice denotes a tensile strength limit that ensures the integrity and functionality of light use pulleys used in rope rescue operations. A tensile strength of 22 k/N represents a safe upper threshold that allows for adequate force application without risking permanent damage to the pulleys or the rope. Exceeding this limit could potentially lead to material failure, degradation of performance, or unsafe operating conditions.

In the context of rescue scenarios, using equipment within specified limits is crucial for ensuring both the safety of rescuers and the effectiveness of rescue operations. Proper understanding of these limits allows rescuers to maintain the reliability and longevity of their equipment, essential for high-stakes environments.