Answer:
A 5-letter word for a hauling machine using a chain wrapped around a drum is a hoist, which uses mechanical advantage to lift heavy loads and is distinct from similar devices such as winches, pulleys, and cranes.
Step-by-step explanation:
The correct answer to the question is hoist. A hoist is a type of hauling machine that uses a chain, rope, or cable wrapped around a drum, which is then rotated to lift or lower heavy loads. This mechanism can be found in various applications, from construction sites to warehouses, where lifting heavy objects is necessary. A hoist can operate manually, electrically, or pneumatically, and it often involves a system of pulleys to increase the lifting power, known as mechanical advantage (MA).
In contrast, other options like a winch is also a lifting device but primarily used for pulling or letting out tension, whereas a pulley is a wheel on an axle designed to change the direction of force on a cable or belt. A crane is a larger structure that might incorporate a hoist in its mechanism to lift loads but is not defined solely by the characteristic of the question.