Elevators and escalators as weight machines that take advantage of pulleys and weights. Is clearly visible in the elevator. Lift the weights using a single pulley. Running up and down the elevator by the cable or wire roller monkeys traced to lie pulley, which was attached to the top of the list for display. The other end of the cable attaches to lift weights and weight. Which will counterbalance the weight plus the weight of the elevator passenger elevator. Either a weight lift and move up and down along the rails installed in putting an electric motor to spin the reels. This makes the mobile and wireless cable service elevators running up and down the elevator to go to different floors of the building escalator invisible work of pulleys and weights clear as it lifts, escalators, but it works the same way.
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