Which of the following statements is true concerning capstans?

The correct choice indicates that both statements concerning capstans are true, which is significant for understanding their operation.

Capstans are devices used for controlling the motion of ropes, primarily in hoisting applications. The first statement, “Fasten the hoist to a weak structure,” reflects the importance of ensuring that the structure can support the load. A weak structure is inappropriate for hoisting as it can lead to failures and safety hazards. However, the emphasis here is more on the necessity of anchoring capstans to a robust, stable structure that can handle the tension and dynamic forces involved during the operation.

The second statement, “To interrupt hoisting, pull harder on the rope,” underscores a fundamental operational principle of capstans. Unlike a fixed pulley system, pulling harder on the rope can actually aid in managing the load and controlling the hoisting mechanism, allowing the operator to effectively stop or control the motion of the load.

So, considering both these points, the option confirming that both statements are true accurately captures key aspects of capstan operation and safety concerns involved in their use. This underscores important safety protocols and operational understanding necessary in working with lifting equipment.