POE Lesson 1.1 Mechanisms – Key Terms FM

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Across
  1. 2. Impeding effect exerted by one material object on another.
  2. 3. An inclined plane wrapped around a cylinder, forming the path and pitch.
  3. 6. A continuous band of tough flexible material used to transmit motion and power within a pulley system.
  4. 8. A gear positioned between the driver and the driven gear used to change rotational direction.
  5. 9. A mechanism that changes the direction or magnitude of a force.
  6. 11. Distance between adjacent threads in a screw.
  7. 12. An external force applied to an object.
  8. 16. A substance that tapers to a thin edge and is used for splitting, raising heavy bodies, or tightening by being driven into something.
  9. 17. The ratio of useful energy output to the total energy input, or the percentage of work input that is converted to work output.
  10. 21. The ratio of the magnitude of the resistance and effort forces applied to a system.
  11. 23. A condition where there are no net external forces acting upon a particle or rigid body and the body remains at rest or continues at a constant velocity.
  12. 24. Two differently sized circular objects that are attached together and turn as one.
  13. 25. The resistance that one surface or object encounters when moving over another.
  14. 26. The turning effect of a force about a point equal to the magnitude of the force times the perpendicular distance from the point to the line of action from the force.
Down
  1. 1. A force that produces or tends to produce rotation or torsion.
  2. 4. A profession for which one trains and which is undertaken as a long-term vocation.
  3. 5. A toothed wheel whose teeth engage the links of a chain.
  4. 7. A circular toothed object used to transfer rotary motion and torque through interlocking teeth.
  5. 8. A flat surface set at an angle (or incline) with no moving parts that is able to lift objects by pushing or pulling the load.
  6. 10. A rigid bar used to exert a pressure or sustain a weight at one point of its length by the application of a force at a second point and turning at a third on a fulcrum.
  7. 13. A series of usually metal links or rings connected to or fitted into one another and used to transmit motion and power within a sprocket system.
  8. 14. Ratio of distance traveled by the applied effort and resistance force within a system.
  9. 15. Creating, designing, and transmitting technical information so that people can understand it easily and use it safely, effectively, and efficiently.
  10. 18. The fixed point around which a lever rotates.
  11. 19. A type of lever that is a wheel with a groove in its rim, which is used to change the direction or multiply a force exerted by a rope or cable.
  12. 20. A system that is a combination of mechanical and electrical systems controlled by a computer program.
  13. 22. The structure of or the relationship of the parts in a machine or in a construction or process comparable to a machine.