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The calculator below can be used to calculate effort force in block, tackle or pulley construction. The calculator can be used for metric and imperial units as long as the use of units are consistent.
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What is a block and tackle system?
How much force does a block & tackle use?
What is a block and tackle rigging diagram?
How many pulleys are in a block & tackle?
In this video, Capt. Bob Glover explains the formula for calculating the amount of force to lift an object using a block and tackle rigging.
- 11 min
- 62K
- Northeast Maritime Institute
A block and tackle is an arrangement of rope and pulleys that allows you to trade force for distance. In this edition of How Stuff Works we will look at how a block and tackle works, and also examine several other force-multiplying devices!
- A pulley is a wheel on an axle designed to assist in the movement of heavy loads. A one-wheel pulley allows you to change the direction of the forc...
- Pulleys have various applications across many industries. Common examples include construction pulleys, which are used to lift and move heavy mater...
- A crane is a machine that uses pulleys and cables to lift, move and lower heavy materials. While cranes do use pulleys for their main function, the...
- Pulley
- Pulley Systems
- Simple Machine Mechanical Advantage Calculators
A pulley is a simple machine in the form of a wheel with a groove between flanges mounted on an axle that is used to guide a line (a rope or a cable) around it or support its movement. The wheel with a groove is called a sheave or pulley wheel. The sheave is installed on an axle, sometimes with a bearing, inside the pulley case. The sheave can free...
One or more sheaves mounted in a casing are called a pulley block or just a pulley. Two sheaves in one casing are called a double pulley block, three sheaves — a triple pulley block, and so on. In a pulley set, there are usually one or several moving pulleys and one or several pulleys that are not moving. Such a system of two or more pulleys is cal...
It covers how to determine the IMA for any pulley or block and tackle setup, and how to use the IMA to determine the effort force required to lift any resistance.
- 19 min
- 82.8K
- davenport1947
The block and tackle rigging diagram is primarily a thread with blocks on both sides like a pulley. The diagram could be drawn using various software on the internet like EdrawMax.
In this instructional video, Capt. Bob Glover explains how to calculate the amount of force you need to lift a weight using a typical block and tackle.
- 10 min
- 8.7K
- Northeast Maritime Institute
