FORCES AND MACHINES
Across
- 4. a simple machine in form of an arm which can lift a heavy load by applying very little effort
- 5. the point at which a lever rests and turns
- 7. unit of weight
- 10. force produced by rubbing two rough edges
- 11. the name given to the force that makes all things fall to the ground
- 13. machines all machines are made of them
- 14. 2 a lever with load in between the effort and fulcrum
- 15. friction friction caused by fluids
- 17. 3 a lever with effort in between the fulcrum and load
- 20. force the downward pull of the Earth
- 22. forces that are opposite in direction and equal in size
Down
- 1. two inclined planes put together
- 2. the gravitational force on an object
- 3. plane a sloping surface used to raise a heavy load
- 6. forces that are opposite in direction but unequal in size
- 8. the power applied to lift a load by the lever
- 9. force the resistance experienced by swimmers, runners, cyclists and motor racing drivers
- 12. the tendency to keep going in the same direction and at the same speed
- 14. 1 a lever with fulcrum in between the load and effort
- 16. newton a scientist who forwarded the first law of motion
- 18. materials that can flow
- 19. the amount of material that an object contains
- 21. weight lifted by the lever