Levers and Gears

• What is a moment in physics?

  The turning effect of a force
• How do you calculate the moment?

  Moment = Force × Distance
• What must the distance be in the moment calculation?

  Perpendicular from the line of action to the pivot
• How do levers function as force multipliers?

  They allow lifting heavy objects with less force
• What is the lifting force on the left side of the lever?

  50 Newtons
• What is the distance of the lifting force from the pivot?

  0.2 meters
• What must the moment on both sides of the lever equal?

  10 Newton meters
• How do gears transmit the effect of a force?

  By connecting the engine to the wheels
• What is the relationship between gear A and gear B's radius?

  Gear B has twice the radius of gear A
• What happens when gear A turns?

  It applies a force onto gear B
• How does the turning effect of gear B compare to gear A?

  Gear B's turning effect is twice as large
• How often does gear A rotate compared to gear B?

  Gear A rotates twice for every one of gear B
• What is the work done by the two gears?

  The work done is the same
• Where can you find questions on levers and gears?

  • In the vision workbook
  • Available via a link in the video