How pulleys can help us
I can describe how pulleys can make difficult work easier.
How pulleys can help us
I can describe how pulleys can make difficult work easier.
Lesson details
Key learning points
- 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.
Common misconception
All pulleys have the wheel attached to a ceiling.
Examples will be given of different types of simple pulleys.
Keywords
Pull - A pull is a force that brings an object closer.
Pulley - A pulley is a simple mechanism or machine which is useful for lifting things.
Load - The load is the object you are lifting with a simple machine.
Effort - The effort is the force needed to do a job.
Force - A force is a push or a pull. Forces can make objects move, slow down, change direction or change shape.
Equipment
See additional resources.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
Loading...
Starter quiz
6 Questions
Exit quiz
6 Questions
