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A pulley uses a wheel and a rope, cord, or chain. Pulleys help us lift things that are heavy. Here are some examples of pulleys at work. Setting Sail Sailboats use pulleys. Pulleys help raise the sails, turn the boat,…
The world is full of incredible elevators. Many of them use pulleys. Here are a few of TFK’ s favorite elevators. The world’s fastest elevator is in Shanghai Tower, in China. It travels almost as fast as a cheetah can.…
