Having decided to go with good old man-power for the mechanical design of the crane, the options available to us all involve the use of a pulley design. The aim of the pulley system is to try to reduce the amount of work required to lift a particular load. The aim is to increase the Mechanical Advantage to a point where the load of a tonne that we need to be able to lift, is reduced to a fraction of this so that it can be operated via human power:
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