Across
- 4. the mechanical advantage of a machine in the absence of friction
- 5. the force exerted by a machine
- 7. the ratio of the output force to the input force in a machine
- 10. the rate of doing work
- 11. the distance between the fulcrum in a lever and the output force
- 12. the product of distance and the force in the direction an object moves
- 14. the number of times that a machine increases an input force
- 15. a device that changes a force
- 17. force the force exerted on a machine
- 19. a slanted surface along which a force moves an object to a different elevation
- 20. a V-shaped object whose sides are two inclined planes sloped toward each other
- 23. an inclined plane wrapped around a cylinder
- 24. the SI unit of work
- 26. the work done on a machine
Down
- 1. a simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius
- 2. the distance between the fulcrum in a lever and the input force
- 3. a common unit of power, equal to about 746 watts
- 6. the fixed point a lever rotates around
- 8. a combination of two or more simple machines that operate together
- 9. the work done by a machine
- 13. the SI unit of power
- 16. the percentage of the work input that becomes work output in a machine
- 18. a simple machine that consists of a rope that fits into a groove in a wheel
- 21. a rigid bar that is free to move around a fixed point
- 22. distance the distance an output force acts through in a machine
- 25. distance the distance through which the input force acts in a machine