How pulleys can help us
Lesson 10 / 13
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I can describe how pulleys can make difficult work easier.
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A pulley is a simple mechanism or machine, used in everyday life, which is useful for lifting things.
A pulley often consists of a wheel with a groove, through which a string or rope runs.
The object you are lifting is called the load, and the force you apply to make an object move is called the effort.
Some pulleys make it easier because they change the direction of the force needed to lift an object.
Some pulleys make it easier to lift an object because they decrease the effort or force needed.
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This content is by Cashar and published under an open licence.