What is the minimum number of parts of line required to lift a load weighing 36,500 lbs with a crane that has a line pull of 9,000 lbs?

To determine the minimum number of parts of line required to lift a load safely, it is essential to consider both the weight of the load and the crane's line pull capacity. The load you need to lift weighs 36,500 lbs, while the crane has a maximum line pull capacity of 9,000 lbs.

To find out how many parts of line are necessary for safe lifting, you can divide the weight of the load by the crane’s line pull capacity. This calculation provides the minimum number of lines needed to lift the load without exceeding the crane’s limit:

36,500 lbs (load) ÷ 9,000 lbs (line pull) = 4.055

Since you cannot have a fraction of a line, you round up to the nearest whole number, which is 5. This means that five parts of line are necessary to ensure the load can be lifted safely and effectively without overloading the crane beyond its capacity. Thus, the choice indicating five parts of line reflects the need to account for safety and operational limits in crane lifting applications.

In this scenario, selecting five parts of line adequately distributes the weight of the load across the crane's capabilities, ensuring a safe working environment.