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There are 2 NRICH Mathematical resources connected to Centre of mass, you may find related items under Mechanics.
Broad Topics > Mechanics > Centre of massExploring balance and centres of mass can be great fun. The resulting structures can seem impossible. Here are some images to encourage you to experiment with non-breakable objects of your own.
How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...