differential pulley
noun
: a tackle consisting of a fixed upper double block with pulleys of different diameters fixed together on the same axis, a movable single lower pulley that carries the load, and an endless cable or chain that passes around all the pulleys and hangs in a loop for operating the mechanism which is used to achieve a very high mechanical advantage
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“Differential pulley.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/differential%20pulley. Accessed 30 Nov. 2024.
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