What is the angle factor for a 60-degree sling angle?

What is the angle factor for a 60-degree sling angle?

• A. 1.73
• B. 1.41
• C. 1.00
• D. 1.50

Answer: (A)

When two slings share a load, the tension in each sling depends on the angle they form. The angle factor is the ratio of the total load to the tension in a single sling, and it comes from the vertical components balancing the load: 2 T cos(theta) = W, where theta is the angle each sling makes with the vertical. The angle factor is W/T = 2 cos(theta). For a sling angle of 60 degrees, the two slings are 30 degrees from the vertical, so theta = 30°. Compute the factor: 2 cos(30°) = 2 × (√3/2) = √3 ≈ 1.73. Therefore, the angle factor is about 1.73.

When two slings share a load, the tension in each sling depends on the angle they form. The angle factor is the ratio of the total load to the tension in a single sling, and it comes from the vertical components balancing the load: 2 T cos(theta) = W, where theta is the angle each sling makes with the vertical. The angle factor is W/T = 2 cos(theta).

For a sling angle of 60 degrees, the two slings are 30 degrees from the vertical, so theta = 30°. Compute the factor: 2 cos(30°) = 2 × (√3/2) = √3 ≈ 1.73. Therefore, the angle factor is about 1.73.