Across
- 2. The most famous Rube Goldberg Machine
- 5. a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt
- 9. measure of the effectiveness with which a mechanical system performs
- 12. thick at one end and tapers off to a sharp edge at the other
- 13. A machine that contains many pulleys that spin a car's axle causing it to move
- 14. a beam connected to ground by a hinge, or pivot, called a fulcrum
- 15. An example of an inclined plane
- 17. the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine
- 18. consists of a round disk with a rod through the center of it
- 19. measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement
- 20. An example of a wedge
Down
- 1. An example of a pulley
- 3. a chain reaction–type machine or contraption intentionally designed to perform a simple task in an overly complicated way
- 4. An example of a screw
- 6. a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force
- 7. a tilted surface
- 8. An example of a lever
- 10. The push or pull on an object with mass causes it to change its velocity
- 11. a mechanical device that changes the direction or magnitude of a force
- 16. A cutting device that has two wedges and a lever