What is it called when the load applied to the forks remains unchanged in direction and magnitude while the forks are placed under a stack of goods?

The situation described pertains to a static load. A static load refers to a load that remains constant in both direction and magnitude over time. When forks are placed under a stack of goods and the weight of the goods does not change, the load applied to the forks is considered static. This means that there is no movement or fluctuation in the load, which is crucial for safe operations with forklift trucks.

On the other hand, a dynamic load would involve changes in the load's magnitude or direction, such as when lifting or moving objects. A variable load would imply fluctuations in the load’s weight or distribution, which is not applicable in this scenario. An impact load is associated with loads that are applied suddenly or unexpectedly, such as during a collision, which also does not reflect the steady nature of the load described.