1. Inclined Plane Decreases Input force!!! A flat, sloped surface.
Allows you to exert your input force over a longer distance.
Decreases Input force!!!
Ex: Ramp

2. Wedge Decreases Input force!!!
An inclined plane that moves (thick at one end and thin at the other).
Allows you to exert your input force over a longer distance.
Decreases Input force!!!
Ex: Ax; zipper

3. Screw Decreases Input force!!!
An inclined plane wrapped around a cylinder.
Allows you to exert your input force over a longer distance.
Decreases Input force!!!
Ex: screws, jar lids

4. Levers A rigid bar that is free to pivot, or rotate, on a fixed point.
Fulcrum – Fixed point the lever pivots around.
1st class lever – Increases force and changes direction
Ex: Seesaw, pliers
2nd class lever – Increases force
Ex: wheelbarrow
3rd class lever – Increases distance
Ex: Hockey stick, baseball bat

5. Wheel and Axle
Two circular objects (wheel) that rotate around a common axis (axle).
If force is applied to the wheel – Increases force
Ex: Screwdriver
If force is applied to the axle – Increases distance
Ex: Axle on a car

6. Pulley A grooved wheel with a rope or cable wrapped around it.
Different types:
Fixed pulley: Changes direction
Movable pulley: decreases input force
Block and tackle: (fixed and movable pulley put together) greatly decreases input force
Ex: Flagpole; crane