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