What term defines the ratio describing bending efficiency of a rope?

What term defines the ratio describing bending efficiency of a rope?

• A. Tension ratio
• B. Load factor
• C. Bending efficiency
• D. Safety factor

Answer: (C)

Bending efficiency describes how much the rope’s strength is affected when it’s bent around a pulley, sheave, or sharp corner. It is a ratio of the rope’s strength in a bend to its strength when pulled straight. In practice, you compare the rope’s breaking strength in a bend (what it can carry when wrapped around a fitting with a given bend radius) to its straight-break strength. If bending reduces the rope’s capability, the efficiency drops below 1. A value near 1 means bending has little effect; a lower value indicates greater weakening due to the bend. This concept helps determine whether a rope around a particular bend will safely carry the required load. Other terms like tension ratio describe force on each side of a bend, not the rope’s reduced strength due to bending; load factor and safety factor describe different relationships between loads and capacities and are not specifically about bending effects.

Bending efficiency describes how much the rope’s strength is affected when it’s bent around a pulley, sheave, or sharp corner. It is a ratio of the rope’s strength in a bend to its strength when pulled straight. In practice, you compare the rope’s breaking strength in a bend (what it can carry when wrapped around a fitting with a given bend radius) to its straight-break strength. If bending reduces the rope’s capability, the efficiency drops below 1. A value near 1 means bending has little effect; a lower value indicates greater weakening due to the bend. This concept helps determine whether a rope around a particular bend will safely carry the required load. Other terms like tension ratio describe force on each side of a bend, not the rope’s reduced strength due to bending; load factor and safety factor describe different relationships between loads and capacities and are not specifically about bending effects.