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Photographer's Note

A pulley (also called a sheave or block) is a wheel with a groove between two flanges around its circumference. A rope, cable or belt usually runs inside the groove. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion.

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Additional Photos by Christian Herquin (Herquin) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 520 W: 56 N: 729] (7789)
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