Across
- 1. something that makes it difficult to push or pull
- 4. a push or pull
- 7. a ramp that goes around a post
- 10. how well a machine does work
- 11. plane a ramp
- 14. force exerted on a machine
- 15. and axle when a rod turns a wheel
Down
- 1. when a rope fits in a wheel and is used to lift something up always used on flag poles
- 2. no movement=no work
- 3. advantage mechanical advantage =output force divided by input force
- 5. force exerted by a machine
- 6. force that opposes motion between two touching surfaces
- 8. looks like a ramp but it moves think of what we use to hold the classroom door open
- 9. a pole or stick that is used to push something up (to pry)
- 12. machine when you put two simple machines together to create a new machine
- 13. machine a tool that does work with one movement