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The key to the trick is timing: each of the lifters must apply the lifting force at the same moment. When this is done, the weight of the subject is divided equally between each lifter, requiring each person to contribute only 12–20 kilograms (26–44 lb) of lift, to raise a 50–80-kilogram (110–176 lb) person.
This requires the bases to throw the initial foot and then catch the other one in an extended position, landing in a liberty or heel stretch. The flyer is the one who does the switching, they lift their foot out of the bases' hands and replaces their other foot in the same spot to be caught by the bases. It may also be referred to as a tic-up. [34]
The two-person double chair, which for many years was the workhorse of the ski industry, can move roughly 1,200 people per hour at rope speeds of up to 2.5 m/s (8.2 ft/s). [2] The four person detachable chairlift ("high-speed quad") can transport 2,400 people per hour with an average rope speed of 5 m/s (16.4 ft/s). [3]
For example, if a person can lift 100 pounds on a given exercise for 10 reps, the estimated one rep max would be 133 pounds for both formulae. However, if the person were to complete only 6 reps, then Epley would estimate a one rep maximum of approximately 120 pounds, while Brzycki would return an estimate of approximately 116 pounds.
A paternoster in Prague Paternoster elevator in The Hague, when it was still in operation. A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping.
Residential elevators may be small enough to only accommodate one person while some are large enough for more than a dozen. Wheelchair, or platform elevators, a specialized type of elevator designed to move a wheelchair 3.7 m (12 ft) or less, can often accommodate just one person in a wheelchair at a time with a load of 340 kg (750 lb). [78]
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