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