Across
- 2. a machine consisting of a grooved wheel that holds a rope or cable
- 5. (j) the Newton meter (n•m)
- 8. a double inclined plane that moves
- 12. an inclined plane wrapped in a spiral
- 15. output force/input force
- 18. tells you how many times the machine multiplies force
- 19. occurs when a force causes an object to move in the direction of the force
- 21. machines that are made of two or more simple machines
Down
- 1. (work output/work input)•100
- 3. the work done by a machine
- 4. a comparison between a machines work input and a machines output
- 6. work/time
- 7. force•distance
- 9. machine that is a straight, slanted surface
- 10. a machine consisting of two circular objects of different sizes
- 11. rate at which work is done
- 13. a devise that makes work easier
- 14. occurs when a force causes an object to move in the direction of the force
- 16. a simple machine that consists of a bar that pivots at a fixed point called a fulcrum
- 17. joules per second
- 19. the work done on a machine
- 20. fixed point on a lever