What component is described as 'one or more pulleys or sheaves confined in a wood or metal frame'?

What component is described as 'one or more pulleys or sheaves confined in a wood or metal frame'?

• A. A block
• B. A winch
• C. A capstan
• D. A fairleader

Answer: (A)

A block is a pulley assembly placed inside a wooden or metal frame. The frame holds one or more pulleys (sheaves) together so the rope can loop around them, allowing you to change the direction of pull or, when used with other blocks, gain mechanical advantage. This setup is fundamental in rigging for lifting or hauling, known as a block and tackle when paired with another block. The other devices serve different purposes: a winch uses a drum to wind rope; a capstan uses a rotating drum to haul lines; a fairleader guides a rope around obstacles. So the description points to a block.

A block is a pulley assembly placed inside a wooden or metal frame. The frame holds one or more pulleys (sheaves) together so the rope can loop around them, allowing you to change the direction of pull or, when used with other blocks, gain mechanical advantage. This setup is fundamental in rigging for lifting or hauling, known as a block and tackle when paired with another block. The other devices serve different purposes: a winch uses a drum to wind rope; a capstan uses a rotating drum to haul lines; a fairleader guides a rope around obstacles. So the description points to a block.