What happens to the load on the anchor when the critical angle increases?

When the critical angle increases, the load on the anchor tends to increase due to the mechanics of force distribution in rigging systems. As the angle between the two legs of the anchor system gets larger, each leg of the system bears more weight from the load being supported. This is due to the way forces are divided in a system of ropes; with a larger angle, the effective force on the anchor increases because each leg must support not only the load but also the additional force caused by the angle.

In practical terms, if a rescuer is using an anchor point with two legs, when the angle between these legs opens up, the tension in each leg increases because the load is effectively being pulled in different directions. This can lead to increased stress on the anchor point, which is critical to consider for safety. Therefore, managing the critical angle is vital in ensuring that the anchor can safely support the load without exceeding its capacity.

Understanding this principle is essential for effective rigging and rescue operations, where ensuring the integrity of the anchor helps maintain safety for both the rescuer and the person being rescued.