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Topic – Centre of Gravity in Structures

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Centre of Gravity in Structures

Centre of Gravity and Stability

All structures have a centre of gravity. A low centre of gravity makes a structure more stable. A structure with a low centre of gravity will not tip over easily.

If the heaviest part is near the bottom, the centre of gravity is low. If the heaviest part is near the top, the centre of gravity is higher.

Centre of Gravity and Loads

A structure holds a load. The load can change where the centre of gravity is. If you balance a ruler on one finger and place an eraser on one end, the eraser is the load. The ruler’s centre of gravity changed when you added a load at one end. The centre of gravity moved closer to the load.

A ladder is a structure. The person on the ladder is the load

A ladder is a structure. The person on the ladder is the load. When a person stands on the bottom step of a ladder, the centre of gravity is low. The ladder is very stable. When a person stands on the top step, the centre of gravity is higher. The ladder is easier to tip over.


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