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Gyroscopes explained

Gyrosopes appear to defy gravity, so Peter Main shows how the conservation of angular momentum helps to explain their intriguing behaviour

A toy gyroscope

The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.

The behaviour of a gyroscope is explained, in part, by the conservation of momentum and angular momentum. An applied torque from a couple gives rise to precession.

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