What dynamic force is introduced to the crane when the hoist line is not vertical?

When the hoist line is not vertical during a lift, a side pull is introduced to the crane. This occurs because the load is not being lifted straight up and instead exerts a lateral force on the crane. This lateral force can potentially cause instability, leading to issues such as tipping or increased wear on the crane components.

In the context of rigging and crane operations, recognizing the impacts of side pulls is crucial. They can complicate the lifting process and necessitate adjustments in operations to maintain safety and ensure that the equipment is not subjected to excessive stress. Proper understanding of this dynamic force is essential for safe crane operation and effective load handling.

The other forces mentioned, such as lift force, downward pull, and torque, are related to the lifting process but do not specifically describe the consequence of an off-vertical hoist line as clearly as side pull does.