Block and tackle, Rope, Pulley & Lever

Block and tackle, combination of a flexible rope, or cable, and pulleys commonly used to augment pulling force; it can be used to lift heavy weights or to exert large forces in any direction. In the Figure there are four freely rotating pulleys, two on the upper block, which remains fixed, and two

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Pulleys and Mechanical Advantage Systems

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【Super Load】The block and tackle pulley system is made of heavy-duty pulleys and strong ropes that can handle up to 4,400 lbs without problem

1100Lbs Pulley System for Lifting Heavy Objects, 65 Ft 3/8 Rope Hoist, 4400Lbs Breaking Strength Block and Tackle Pulley System, 7:1 Lifting Power

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Pulleys