Pulley
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The Invention of the Pulley
The pulley is a wheel which forms part of a simple machine that can be used to make lifting heavy objects easier. Learn more about world changing innovations with our Picture Encyclopedia!
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Storyboard Description
New Innovations - Pulley | The pulley is a wheel which forms part of a machine that can be used to make lifting heavy objects easier. Its mechanical advantage is equal to the number of wheels used.
Storyboard Text
- PULLEY The pulley is a wheel which forms part of a machine that can be used to make lifting heavy objects easier. Its mechanical advantage is equal to the number of wheels used.
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