If the load is lifted too fast it will

• A. Increase the effective weight of the load
• B. Decrease the crane's stability
• C. Improve operator visibility
• D. Reduce rope wear

Answer: (A)

Lifting a load quickly creates a dynamic or shock load. When you accelerate the mass upward, the hoist rope must supply not just the weight of the load but also the inertial force needed to accelerate it (mass times acceleration). This extra force adds to the static weight, so the tension in the rope—and thus the load on the crane—becomes greater than the load’s stated weight. In other words, the effective weight the crane has to lift increases with rapid lifting. That’s why the correct idea is that lifting too fast increases the effective weight of the load. Slower, smoother lifting helps keep this dynamic load under the crane’s rated capacity and reduces the risk of overload, sway, or other issues.