Science  Lever and Pulley/ Pulley
  
    Created by ftbrady
  
  
  
  
    
      
      
    
  
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            the fixed point which a lever turns on is called
          
        
          fulcrum
        
      
 
      - 
          
            other than multiplying a force, what else can levers do
          
        
          change the direction of a force
        
      
 
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            how would you determine what class a lever is
          
        
          look in the middle and be FRE; fulcrum in middle=class 1, resistance in middle = 2; effort in the middle = class 3
        
      
 
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            what happens to the force needed to move an object as you increase the length of effort arm
          
        
          force needed would decrease as you increase the effort arm
        
      
 
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            what would happen to the force required if you decreased the length of the effort arm?
          
        
          the force needed would increase
        
      
 
      - 
          
            ALL LEVERS make work easier
          
        
          false; the 3rd class lever does not make work easier; They give you increased speed
        
      
 
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            pulleys can_____ a force or change is ______
          
        
          direction