Across
- 4. a simple machine-a lever
- 6. make it easier for you to move staff up to a desk
- 7. makes hydraulic and pneumatic system possible
- 11. is a combination of two wheel of different diameters that turn together
- 12. a force that opposes motion
- 13. the force the machine applies to the object
- 15. machines use a special type of linkage
- 17. is the part that transfers your energy from pedals to the back wheel
- 19. is the amount by which a machine can multiply a force
- 21. ratio calculated by dividing the input distance by the output distance
- 22. what the device supposed to do
- 25. a measurement of how well a machine or device uses energy
- 26. essential components of most mechanical systems
Down
- 1. a rigid bar or plank that can rotate around a fixed point called a pivot or fulcrum.
- 2. is similar in shape to an inclined plane
- 3. a tool or device made up of one basic machine
- 5. uses a liquid under pressure to move loads
- 8. is a measure of the amount of force applied to given area
- 9. consists of wire,rope,or cable moving on a grooved wheel
- 10. is a system in which simple machines all work together
- 14. done when a force acts on an object to make the object move
- 16. is a group of parts that work together to perform a function
- 18. is the energy source for a car
- 20. the force applied to the machine
- 23. the physical form of the device that makes it usable
- 24. is a cylinder with groove cut in a spiral on the outside