Moments

• Moment


  A moment is the turning effect of a force
• What distance must be used when calculating a moment

  The perpendicular distance between the line of action of the force and the axis of the rotation
• Principle of moments


  For an object to be in equilibrium the sum of the clockwise moments about a point must be equal to the sum of anticlockwise moments
• Objects centre of gravity

  The single point through which the objects entire weight can be said to act
• What occurs if the line of action an objects centre of gravity lies outside its base

  The objects weight will produce a resultant moment and if is unsupported the object may topple