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The Great Clock's pendulum bob (Big Ben)

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Uploaded by on Jul 16, 2008

(There is no dialogue in this video) This is the pendulum bob for the Great Clock within Big Ben. The pendulum bob weighs 203 kg. The bob is made from concentric tubes of steel and zinc. Each period of the pendulum is 2 seconds. The total weight of the pendulum is 299 kg.

Visit http://www.parliament.uk/bigben for more information about the Clock Tower.

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Education

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