FORCES AND MACHINES

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

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