If the sling angle decreases, what happens to sling stress?

Prepare for the NCCR Boilermaker Test. Includes flashcards and multiple-choice questions with hints and detailed explanations to ensure your success. Gear up for your examination!

Multiple Choice

If the sling angle decreases, what happens to sling stress?

Explanation:
Sling stress rises as the sling angle becomes more shallow relative to the horizontal. When two legs share the load, the weight is supported by the vertical components of each leg’s tension. If you measure the angle from the horizontal as φ, the vertical component is T sin φ, and the weight W is 2T sin φ. So T = W / (2 sin φ). As φ decreases (the legs become closer to horizontal), sin φ decreases, forcing T to increase. That means the sling carries more force (greater stress) when the angle is smaller. Keeping the legs spread wider (larger φ) reduces the required tension.

Sling stress rises as the sling angle becomes more shallow relative to the horizontal. When two legs share the load, the weight is supported by the vertical components of each leg’s tension. If you measure the angle from the horizontal as φ, the vertical component is T sin φ, and the weight W is 2T sin φ. So T = W / (2 sin φ). As φ decreases (the legs become closer to horizontal), sin φ decreases, forcing T to increase. That means the sling carries more force (greater stress) when the angle is smaller. Keeping the legs spread wider (larger φ) reduces the required tension.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy