In Pulley's inhabitants of Mammoth Island try to find the best method to lift their mammoths. A young Islander, Olive, decides to use a simple machine called a pulley to get the job done. A pulley is a wheel that carries a rope, chain or cable on its rim and be used to lift a heavy load. And when multiple pulleys work together, they lessen the effort it takes to do work. So using a ten pulley system would require one tenth of the effort of a single pulley to lift a mammoth!

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Based on the Dorling Kindersley book "The Way Things Work" by David Macaulay.