With this you just have to think about what do different shoes do and why? For example, track shoes need to be extremely light to make it so the runners don't need to move excess weight to accelerate faster whereas basketball shoes can be heavier because they need high ankle coverage for more ankle support during moves like the crossover. Then the key factors that I would do personally are: difficulty to produce, benefit to athlete, cost to athlete, weight, and support. My advice would be to systematically go through a bunch of sports and talk about each of their shoes...
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One sheave means that you are using a single drum winder. They are the worst! Double drum winders control easier, brake better and are much more efficient. They save time ( two skips or cages) and can be clutched to perform faster shift transport. A single drum is slow, unbalanced and can be a nightmare if it trips out during hoisting. If the brake system is not perfect it can be a real hairy experience. For a runaway single drum, there is no counterbalance effect. It always runs to destruction. With a double drum, the driver still has a chance to control the winder to a certain extent and he has two sets of brakes to rely on. A single sheave could also mean a shaft with a single compartment. No second means of escape unless there are ladders or stairways. Not a very healthy situation.
Those are just a few points. I am sure much more can be said in favor of a double drum winder and two or more sheaves in the headgear. Most of the shafts I have worked at have multiple winders and up to ten compartments. They all have a small single drum service winder for emergencies and moves of personnel during shift times. They are referred to as the Mary - Annes. Apparently, the name originated in the U.K. where an aristocratic mine owner named the first such winder after his mistress.
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It would be to figure out what cancers someone could exactly so no need for a biopsy
Here is the answer that would best complete the given statement above. Anti-lock braking systems can significantly improve your braking stability. The correct answer would be therefore, option B. Anti-lock braking systems is for safety purposes in order for to prevent <span>the wheels from </span>locking<span> up (ceasing rotation) and avoiding uncontrolled skidding. Hope this answer helps.</span>
