Across
- 3. reducing friction can ____ efficiency
- 4. an inclined plane
- 5. Force * displacement
- 6. useful work/total work
- 9. output force/input force
- 12. a machine cant _____ the magnitude of work
Down
- 1. in order to perform a task the ____ of a system interact
- 2. a force that opposes motion
- 5. device that converts sliding friction to rolling friction
- 7. lever with load in the middle
- 8. uses mechanical advantage to change torque
- 10. sometimes wasted energy in systems is released as ____
- 11. any device that transmits force to do work