Which term describes weight that moves or changes during operation?

• A. Static load
• B. Dynamic load
• C. Fixed load
• D. Variable load

Answer: (B)

The term that best describes weight that moves or changes during operation is dynamic load. Dynamic loads are associated with moving objects and can vary in magnitude and direction depending on the forces exerted on the system during operation. For instance, when machinery operates, various components may be in motion, producing forces that fluctuate over time. This contrasts with static load, where the weight remains constant and does not change or move during the operation, as is the case with objects that are at rest.

Fixed load refers to a load that remains constant and does not change over time, while variable load indicates a load that can fluctuate but doesn't necessarily involve motion. Therefore, dynamic load is the accurate term for describing scenarios where the weight in question is actively changing or moving during operation.