Question

______ causes the force to be multiplied and can exceed the rated capacity of the sling or chain even though the load weight is a fraction of the capacity.
failing to install proper guardrails
positioning a signal person out of view of the crane operator
jerking the load rather than slowly picking it up
setting up a crane on soft or uneven ground

Explanation:

When a load is jerked, it creates a dynamic force. According to Newton's second law \(F = ma\), the sudden acceleration (\(a\)) during jerking increases the force (\(F\)). This dynamic force can multiply the static force (due to the load's weight) and exceed the rated capacity of the sling or chain, even if the static load (weight) is within capacity.

Answer:

Jerking the load rather than slowly picking it up