What is the minimum distance from the wall for a 40-foot extension ladder?

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Prepare for the SWLC Climbing 1-6 Test with flashcards, multiple-choice questions, and detailed explanations. Enhance your knowledge and skills, and climb your way to success!

Multiple Choice

What is the minimum distance from the wall for a 40-foot extension ladder?

Explanation:
A safe leaning angle is achieved when the base of the ladder sits about one-quarter of the ladder’s length away from the wall. This 4:1 rule gives a stable, commonly recommended angle around 75 degrees. For a 40-foot ladder, that means the base should be about 10 feet from the wall. At that distance, the ladder reaches roughly sqrt(40^2 − 10^2) ≈ 38.7 feet up the wall, showing you don’t use the full length when it’s leaned. Distances like 8, 12, or 6 feet would create angles outside the recommended range, making the setup less stable.

A safe leaning angle is achieved when the base of the ladder sits about one-quarter of the ladder’s length away from the wall. This 4:1 rule gives a stable, commonly recommended angle around 75 degrees. For a 40-foot ladder, that means the base should be about 10 feet from the wall. At that distance, the ladder reaches roughly sqrt(40^2 − 10^2) ≈ 38.7 feet up the wall, showing you don’t use the full length when it’s leaned. Distances like 8, 12, or 6 feet would create angles outside the recommended range, making the setup less stable.

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