Centre of gravity of composite bodies

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Topic areas

Mechanical engineering

  • Centre of gravity
  • Forces
  • Moments


  • Ratios
  • Algebra



Problem statement

The centre of gravity of an object is the average position of the weight of an object.

The motion of an object can be completely described by the translation of the centre of
gravity, and by rotations about the centre of gravity.

When an object is static, its tendency to tip, or resist tipping, is determined by the position of the centre of gravity relative to the base upon which the object is resting.

How can you determine the position of the centre of gravity of an object?


Click the image to load Balance 1. 

The above interactive allows you to to adjust the pivot to balance the loads.

Supported by

  • Royal Academy of Engineering
  • Motorola Solutions Foundation