Across
- 4. a lever in which the fulcrum is between the input force and the load
- 7. when a fixed pulley and a movable pulley are used together
- 10. is a device that makes work easier by changing the size or direction of a force
- 11. the unit used to express power is joules per second (J/s)
- 12. a type of pulley that is attached to the object being moved and doesn't change the force's direction
- 14. is a comparison of a machine’s work output with the work input
- 18. the work done by the machine on an object is called
- 20. is done when a force causes an object to move in the direction of the force
- 21. an inclined plane that is wrapped in a spiral around a cylinder
- 22. a simple machine consisting of two circular objects of different sizes
Down
- 1. a lever in which the input force is between the fulcrum and the load
- 2. a simple machine that has a grooved wheel that holds a rope or a cable
- 3. a simple machine that is a straight, slanted surface
- 5. is done when a force causes an object to move in the direction of the force
- 6. is the number of times the machine multiplies force
- 8. machines that are made of two or more simple machines
- 9. a bar that pivots at a fixed point
- 11. the work that you do on a machine is called
- 13. a lever in which the load is between the fulcrum and the input force,
- 15. is a simple machine that has a fulcrum
- 16. a type of pulley that is attached to something that does not move and changes the direction of the force
- 17. would be a machine that had 100% mechanical efficiency
- 19. is the rate at which energy is transferred
- 22. a pair of inclined planes that move