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Mechanical Jeopardy !

Mechanical Jeopardy !. Mechanical Jeopardy !. Define Work. Work is exerting force on an object that causes it to move some distance. What is the Formula for Work?. Work = Force x Distance. Explain why carrying your books to class is NOT doing work.

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Mechanical Jeopardy !

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  1. Mechanical Jeopardy!

  2. Mechanical Jeopardy!

  3. Define Work.

  4. Work is exerting force on an object that causes it to move some distance.

  5. What is the Formula for Work?

  6. Work = Force x Distance.

  7. Explain why carrying your books to class is NOT doing work.

  8. The direction of the force on your books (upwards) is not the direction your books move in.

  9. Mr. Antonello asks you to help him lift a 23N bag of sand from the gym 6m upstairs to the science room. How much work must you do? Include units!

  10. W = F x D W = 23N x 6m W = 138N.m or Joules Back to Menu Final Jeopardy

  11. What is the purpose of a Machine?

  12. Machines enable you to do work in a way that is easier or more effective.

  13. List the 6 Simple Machines

  14. Inclined Plane Wedge Screw Lever Pulley Wheel & Axel

  15. What is the Formula for Mechanical Advantage?

  16. Mechanical Advantage = Output Force Input Force

  17. Using the formula for Work, explain how a simple machine like a ramp can make work easier.

  18. W = FxD By increasing the distance (D), you decrease the force (F) needed to do the same amount of work (W). Back to Menu Final Jeopardy

  19. Describe the shape of a wedge.

  20. A wedge is thick at one end and thins to an edge at the other.

  21. Identify this simple machine and its two parts.

  22. This screwdriver is an example of a Wheel & Axel. Wheel Axel

  23. What kind of simple machine is a Zipper? How does it work?

  24. A Zipperis 3 wedges.

  25. How does a Wheel & Axel make work easier?

  26. The wheel is larger than the axel. When you turn the wheel, it multiplies your force on the axel and increases distance. Back to Menu Final Jeopardy

  27. What is the name of this simple machine? How is it easier than using stairs?

  28. An Inclined Plane. By requiring less Force per step

  29. Describe a pulley.

  30. A grooved wheel with a rope wrapped around it.

  31. What are 2 ways that you can change a ramp to increase its mechanical advantage?

  32. MA = Length of incline Height of incline Increase ramp length or lower ramp height.

  33. Describe how the pulley in this picture works. What is its mechanical advantage?

  34. Pulling down on one end causes the other to rise. The MA is 1, since it only changes the direction of force. Back to Menu Final Jeopardy

  35. Name this simple machine and the two simple machines that combine to form it?

  36. The Screw is a combination of a Wedge and Inclined Plane.

  37. What is the triangular rock in the above picture called called?

  38. A Fulcrum.

  39. How can you increase the mechanical advantage of a Screw?

  40. Make the threads or tracks on the screw closer together.

  41. How can you increase the output force of a lever?

  42. Increasethe distance of Input force from fulcrum. Decreasethe distance of Output force from fulcrum. Back to Menu Final Jeopardy

  43. 60 30 10 How does a soap dispenser work?

  44. STOP

  45. Pressing down ejects stored soap and injects air in, increasing pressure. A spring lifts the pump back up, creating a vacuum from the pressure. The pressure draws more soap into the tube for the next pump.

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