What is a significant characteristic of tackle blocks compared to wire rope blocks?

The correct choice highlights that tackle blocks typically possess lighter capacities compared to wire rope blocks. This characteristic is primarily due to the design and intended use of tackle blocks, which are often made for lighter loads and are used in systems where versatility and ease of handling are important.

Tackle blocks usually feature component materials that are less robust than those used in wire rope blocks, making them suitable for applications that do not involve heavy lifting. Their design is focused on creating mechanical advantage through the arrangement of pulleys, which allows for the efficient lifting of lighter loads.

In contrast, wire rope blocks are engineered for heavy-duty applications, with materials and construction that can sustain higher loads. This difference in intended usage aligns with their respective design characteristics, emphasizing lighter capacities for tackle blocks compared to the higher capacities associated with wire rope blocks.