Question: What are the two parts of lift that go down a mine called?
Options: No A, B, C, or D options are provided in the original question.
1.1.7 What do these two parts of the lift –listed in question 1.1.6- do? (1)
1.1.8 What is the difference between the two mine winches shown in 1.8B?
1.1.9 If the mine winch drum diameter is 6m, calculate how far the cage will drop each single rotation of the drum, use the formula C=2π r.
The correct answer is: cage and skip. The cage and skip are the two main parts of a mine lift system that move in the mine shaft. The cage usually carries people and equipment, while the skip mainly carries mined material such as ore or rock.
Why the correct answer is cage and skip
Cage and skip is correct because these are the two lift-related parts named in the mine-shaft system described by the question. A mine shaft is a deep vertical passage, so mines need a lifting system to move people, tools, and material safely between the surface and underground levels.
The cage works like a lift compartment. It is commonly used to carry miners, tools, and equipment up and down the shaft. The skip is more like a large container. It is mainly used to carry mined material, such as ore, coal, or waste rock, from underground to the surface.
This is why the answer to what are the two parts of lift that go down a mine called is not simply “lift” or “elevator.” The question asks for the named parts of the mine-lifting system, and those two parts are the cage and the skip.
What these parts do in the mine lift system
The cage and skip transport people and materials up and down the mine shaft. They do not do the same job in every situation, but both are connected to the lifting system and move vertically through the shaft.
A simple way to separate them is this: the cage is mainly for people and equipment, while the skip is mainly for mined material. For example, miners may ride in the cage to reach an underground working level. Broken rock or ore may be loaded into the skip and lifted to the surface.
The lifting movement is controlled by the mine winch. The winch winds or unwinds the rope or cable, which makes the cage or skip move up or down. This connection between the winch, rope, cage, and skip is the basic idea behind the mine hoisting system.
Why the other possible answers would not be correct
No multiple-choice options are provided, so there are no specific A, B, C, or D answers to reject. Still, some common wrong answers can be explained. “Lift” is too general because it names the whole idea, not the two parts. “Shaft” is also wrong because it is the vertical tunnel, not the moving part.
“Winch” can be confusing, but it is not one of the two parts that go down the mine. The winch is the machine that winds the cable. It usually stays at the surface or in a fixed position and controls the movement of the cage or skip.
The easiest mistake is mixing up the cage with the whole lift. The cage is only one moving compartment. The complete lifting system includes other parts too, such as the winch, drum, cable, and sheave wheel.
How the two mine winches differ
The first mine winch uses a single sheave wheel, while the second uses two sheave wheels and a counterweight. This means the second arrangement has an extra balancing part that can help manage the load more effectively.
A sheave wheel is a grooved wheel that guides the cable. If there is one sheave wheel, the cable has a simpler path. If there are two sheave wheels and a counterweight, the system is more complex because the counterweight balances some of the load as the cage or skip moves.
The key idea is that the winch does not carry people itself. It provides the pulling force through the cable system. The cage or skip is the part that actually moves up and down the shaft.
How to calculate the cage drop for one drum rotation
If the mine winch drum has a diameter of 6 m, the cage drops 6π m, or about 18.85 m, for each single rotation of the drum. This uses the circumference formula C = 2πr.
The diameter is 6 m, so the radius is half of that:
r = 3 m
Now substitute the radius into the formula:
C = 2πr = 2π(3) = 6π m
Using π ≈ 3.14:
6π ≈ 6 × 3.14 = 18.84 m
Rounded slightly, the cage will drop about 18.85 m for each full turn of the drum. This works because one full rotation lets out one full circumference of cable, assuming the cable does not slip and wraps evenly.
Quick memory tip
Remember it this way: cage carries crew, skip carries stone. The cage is for people and equipment; the skip is for mined material.
For calculation questions, look for the drum diameter first. Halve it to get the radius, then use C = 2πr. One full drum rotation equals one drum circumference of cable movement, so the cage drop is the circumference.
