What type of load is caused by sudden lifting, stopping or swinging?

What type of load is caused by sudden lifting, stopping or swinging?

• A. Static Load
• B. Dynamic Load
• C. Impact Load
• D. Dead Load

Answer: (B)

When a load is in motion, the forces on the rigging change with time due to acceleration and inertia. Lifting the load causes upward acceleration, stopping causes deceleration, and swinging introduces inertia as the mass resists changes in direction. These motion-related forces make the load dynamic, because they vary and depend on how the load moves. Dead load is just the constant weight of the equipment, and static load implies no acceleration. An impact load is a very abrupt, short-duration force from a collision; while shocks can occur, the scenario described centers on motion and inertia, which is dynamic load.

When a load is in motion, the forces on the rigging change with time due to acceleration and inertia. Lifting the load causes upward acceleration, stopping causes deceleration, and swinging introduces inertia as the mass resists changes in direction. These motion-related forces make the load dynamic, because they vary and depend on how the load moves. Dead load is just the constant weight of the equipment, and static load implies no acceleration. An impact load is a very abrupt, short-duration force from a collision; while shocks can occur, the scenario described centers on motion and inertia, which is dynamic load.