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Levers

 

Levers use the idea of moments, where something turns about

a pivot (also known as a fulcrum) to make work easier.

Think of using a bar to raise a heavy rock.   

 
 

There must be a load, an effort and a fulcrum. Which is which? 

Show me!
         
         
Think of using a wheelbarrow to move something.  

 
 

There must be a load, an effort and a fulcrum. Which is which? 

 Show me!