moments levers and gears

• object rotating

  cause by force or system of forces
• moment of force

  turning effect
• how to work out moment of force

  force x distance
• if object is balanced what is equal

  total clockwise pivot=total anti clockwise pivot
• examples

  wheelbarrow

  spanner
• balanced moment

  clockwise moment= anti clockwise moment
• objects topple

  unbalanced moment
• unbalanced moment caused by

  line of action being outside of objects base
• levers

  force multipliers
• lever allows

  lift heavy object while suing small amount of force