Question

Mountaineering rope should have

• A. High tenacity and high modulus
• B. High elongation, high work of rupture and low modulus
• C. High work of rupture
• D. High tenacity, high modulus and high work of rupture

Hint:

For safety ropes, energy absorption is more important than stiffness. High elongation and low modulus reduce impact forces.

Answer 1

The Correct Option is B

Step 1: Understanding the application.
Mountaineering ropes are used for safety during climbing and must absorb sudden shock loads when a climber falls. Therefore, energy absorption is more important than stiffness.
Step 2: Role of elongation and modulus.
High elongation allows the rope to stretch during a fall, reducing the peak force transmitted to the climber. A low modulus indicates flexibility, which helps in shock absorption.
Step 3: Importance of work of rupture.
High work of rupture means the rope can absorb a large amount of energy before breaking, which is critical for safety in mountaineering.
Step 4: Conclusion.
Thus, mountaineering ropes should have high elongation, high work of rupture, and low modulus.