The Efficient Engineer on MSN6d
How Levers, Pulleys and Gears Work
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Pulleys use mechanical advantage, similar to levers, to lift loads. Pulleys are wheel shaped with a groove that allows a cord or chain to sit inside the groove. A single pulley changes the ...
end of the lever, h, falls into the notch, where it is firmly held by the s pri n g, i. By drawing the co rd, k, the belt is shifted back upon the tight pulley, B. Behind the levers, !I a n d h ...