Simple Machines

7. the perpendicular distance from the fulcrum to the effort force
9. the force exerted by the load on a lever
13. raising a flag, we pull down flag goes up
14. toothed wheels of different diameter linked together to change the speed or direction moved
15. a wheel with a grooved rim in which a rope or cable can run
16. a device that helps us perform tasks by achieving at least one of the five main functions of machines
17. the perpendicular distance from the fulcrum to the load force
18. levers divided into three classes
20. a rigid bar that can rotate freely around a fulcrum

1. car engine changed from stored chemical energy to mechanical energy as compression forces on pistons
2. car jack: we push with small force, hydraulic jack lifts car
3. transmission gears: different diameter turn at different speeds
4. levers divided into three classes
5. and axle a large diameter, rigid disk connected to a small diameter rigid rod
6. from from engine to the driveshaft
8. levers divided into three classes
10. the load is between the fulcrum and the effort force
11. the fulcrum is between the load and the effort force
12. the effort force is exerted between the fulcrum and the load
19. a support around which a lever can rotate or pivot