Simple Machines
Across
- 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
Down
- 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