Which option best describes the effect of a sharp bend in rope strength?

Which option best describes the effect of a sharp bend in rope strength?

• A. It reduces strength by 50%
• B. It reduces strength by 20%
• C. It does not affect strength
• D. It increases strength

Answer: (A)

Sharp bends create stress concentrations in rope fibers. When a rope is bent tightly, the load concentrates on the fibers on the inside of the bend, causing local damage, wear, and micro-tears. This weakens the rope overall and reduces its effective breaking strength, with a typical rough reduction around half, depending on rope type and bend radius. That’s why the statement about a sharp bend cutting strength by about 50% best captures the effect. The other options don’t fit because a bend doesn’t leave strength unchanged, nor does it increase strength, and it usually reduces more than a small 20% unless the bend is very gentle and the rope is unusually strong. In practice, avoid sharp bends by using a larger radius, protective covers, or pulleys, and inspect the rope after any sharp bend.

Sharp bends create stress concentrations in rope fibers. When a rope is bent tightly, the load concentrates on the fibers on the inside of the bend, causing local damage, wear, and micro-tears. This weakens the rope overall and reduces its effective breaking strength, with a typical rough reduction around half, depending on rope type and bend radius. That’s why the statement about a sharp bend cutting strength by about 50% best captures the effect. The other options don’t fit because a bend doesn’t leave strength unchanged, nor does it increase strength, and it usually reduces more than a small 20% unless the bend is very gentle and the rope is unusually strong. In practice, avoid sharp bends by using a larger radius, protective covers, or pulleys, and inspect the rope after any sharp bend.