BLOCK AND TACKLE

mechanics

Description of the device

Block and tackle is a device designed to lift objects. Using a small amount of force, you can lift a heavy weight. The device is commonly used to elevate heavy objects.

Phenomenon

Block and tackle is a system of pulleys and ropes that allow force transmission. This allows to lift heavy weights by using relatively small amounts of force. The mechanism decreases amount of strength needed to move an object at the expense of prolonging the distance that the object must cover. It’s also possible to balance the big weight by hanging a smaller one at a proper distance from the fulcrum of the body that holds the weights.

How to use it

Stand on the platform. If you pull on the rope, your body weight will be lifted easily. That’s possible because of a block and tackle system.