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 relation to the force for calculating moments?

  Perpendicular from the line of action to the pivot
• What are the two examples of levers mentioned?

  A hammer and a crowbar
• How do levers function as force multipliers?

  They allow lifting heavy objects with less force
• If a force of 10 Newtons is applied at a distance of 1 meter, what is the moment?

  10 Newton meters
• What lifting force is required on the left side if the moment must equal 10 Newton meters at a distance of 0.2 meters?

  50 Newtons
• How do gears transmit the effect of a force?

  By connecting the engine to the wheels
• What are the key concepts of levers and gears in transmitting forces?

  • Levers transmit turning effects of forces
  • Gears connect engine to wheels
  • Levers act as force multipliers
  • Gears change turning effects based on radius
• What is the formula for calculating moments?

  • Moment (Nm) = Force (N) × Distance (m)
• What is the significance of the distance in moment calculations?

  • Distance must be perpendicular to the force