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Physics on a tightrope

In 1974 tightrope walker Philippe Petit walked across a high wire between the twin towers in New York City without falling. This article explains the physics behind his daredevil act

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.

When you are deciding if a body will fall, you need to think about the forces acting on it as described by Newton’s laws of motion. Whether it will balance depends on the position of its centre of gravity and the principle of moments. To describe any rotational motion as it topples over, you need to consider the body’s angular momentum and moment of inertia.

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Previous

Vectors in flight

Next

Seeing the light

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