Which component of a crane is essential for stability during lifting operations?

• A. Boom
• B. Counterweight
• C. Sheave
• D. Hook

Answer: (B)

The counterweight is critical for stability during lifting operations of a crane. Its primary function is to balance the load being lifted, preventing the crane from tipping over. When a load is raised, the counterweight effectively offsets the weight of the load, ensuring that the center of gravity remains within a safe range.

By providing this balance, the counterweight enhances the overall stability of the crane when it is in use. It is especially important when lifting heavy loads or when the crane is extended to its maximum reach. Without an adequate counterweight, the crane would be at a much higher risk of instability, leading to possible accidents or operational failures.

In contrast, the boom is primarily responsible for extending and positioning the load. The sheave is a wheel that enables smooth movement of ropes and cables, while the hook is simply a tool used to hold the load. While these components are vital to the crane's function, they do not contribute to stability in the same way as the counterweight does.