Loads introduced into the machine or its components due to accelerating or decelerating force is called:

Dynamic loading refers to the loads that occur due to the varying speeds of motion, specifically the forces acting on a structure or machine when it is accelerating or decelerating. This type of loading is crucial to consider because dynamic forces can significantly exceed the static loads that a machine might be designed to handle when stationary. When machinery experiences dynamic loads, the stresses and strains on its components can increase unexpectedly, leading to potential failure if not properly accounted for in the design and operational protocols.

Dynamic loads account for factors such as inertia and the impact of momentum during changes in motion. In contrast, other types of loading, like running loading, generally refer to forces acting on a machine during its normal operation at a constant speed rather than during acceleration or deceleration. Cross point loading generally deals with loads applied at specific intersections or connections, while un-stabilized loading refers to conditions where loads are not well-defined or controlled. Therefore, dynamic loading is the appropriate term for the scenario described, as it captures the essence of the forces introduced by changes in motion.