Pulley (Pulley system): Difference between revisions
mNo edit summary |
|||
| Line 11: | Line 11: | ||
== Principle of operation == | == Principle of operation == | ||
[[File:Pulley_example.png| | [[File:Pulley_example.png|150px|thumb|left|2-to-1 pulley system]] | ||
Pulley systems are simple machines used to lift heavy burdens. Image on the left describes 2-to-1 pulley. With this pulley, it takes roughly half of the force to lift the weight. But to lift the weight by 1 meter, you must take 2 meters of the slack as illustrated by arrows and colored parts of the rope. | Pulley systems are simple machines used to lift heavy burdens. Image on the left describes 2-to-1 pulley. With this pulley, it takes roughly half of the force to lift the weight. But to lift the weight by 1 meter, you must take 2 meters of the slack as illustrated by arrows and colored parts of the rope. | ||