Across
- 1. multiple components that serve one specific function within a larger machine
- 3. the scientific unit of energy
- 5. the pivot point of a lever
- 6. the class of lever with the effort in the middle
- 10. a push or pull that causes an object to change direction, speed, or shape
- 13. a machine component that uses liquids under pressure in enclosed spaces
- 15. an axehead is an example of this simple machine
- 16. what a machine is used for; what it does
- 17. the scientific unit of force
- 19. it controls the power applied to other moving parts of a machine
- 21. the percent of input energy that is used by a machine to do output work
- 22. improving a mechanical system through repetitve designing and testing
- 23. a block and tackle is a type of this
- 24. the force that an object experiences due to gravity
- 26. the gear that receives force from a driving gear
- 27. an input force applied to an object or machine
- 28. a simple machine made of rotating parts with different diameters (3 words)
Down
- 2. it can be thought of as the MA of a machine with perfect (100%) efficiency
- 4. the object that work is being done to by a machine
- 7. another term for a ramp (2 words)
- 8. the class of lever with the fulcrum in the middle
- 9. man-made streams created by the Romans for transporting water
- 10. the most common cause of energy loss in machines
- 11. a simple machine that turns rotational motion into linear motion
- 12. describes machines that use compressed air
- 14. engines that use chemical fuels for input energy
- 18. the ability to do work; "the currency of change"
- 20. a change in force produced by a machine (2 words)
- 24. the use of energy to when a force is applied over a certain distance
- 25. it transfers force between different parts of machine (e.g. chain)