Across
- 2. An inclined plane that is wrapped in a sprial
- 5. machine A device that makes work easier
- 7. the rate at which work is do
- 8. & axle Two circular objects of different sizes
- 9. plane A simple machine that is a straight , slanted surface
- 12. A double inclined plane that moves
- 13. Involves friction
Down
- 1. A simple machine conssiting of a grooved wheel that holds a rope or cable
- 3. machine a combination of two or more simple machines that operate together
- 4. Occurs when a force causes an object to move in the direction of the force
- 6. advantage The number of times a machine multiplies the input force
- 10. A simple machine that a fulcrum
- 11. Involves no friction