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Science grade 8

Pulleys and gears chapter 5

TermDefinition
Lever A rigid bar that is supported at one point
Fulcrum The point of the lever
First class lever Always has the fulcrum between the input and the output forces
Second class lever In this situation the fulcrum the very end of the opener and that remains in contact with the bottle cap
Third class lever If you hold the top-of-the-range stationary with your left hand ( the falcon) and then move the rake with the right your hand and your right hand is the input force
Pulley Consists of a grooved wheel with a rope or cable looped around it
Wheel and axle Consists of a shorter axle that is attached to a larger disk called the wheel
Inclined planes A ramp is another name for an inclined plane
Screw Is simply an inclined plane wrapped around a rod
Wedge Is an inclined plane that travels through the object or material
Created by: Undampedhawk
 

 



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