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A physicist team solved why football spiral passes dip, proving air resistance and spin, not gravity, cause the nose to tilt.
A decades-old mystery in sports physics has been solved: the spiral pass in football, where the ball’s nose tilts downward mid-flight, is now explained by gyroscopic procession.
Physicist Tim Gay, along with theoretical physicists Richard Price and William Moss, found that the ball’s rapid spin interacts with oncoming air, which acts as a pivot point—similar to a spinning top—causing the nose to dip.
Their calculations and simulations confirm that air resistance, not gravity, drives this motion, combining with spin to create stability and accuracy.
The discovery reveals the precise physics behind one of football’s most iconic throws.
Un equipo de físicos resolvió por qué la espiral de fútbol pasa en picado, demostrando que la resistencia del aire y el giro, no la gravedad, hacen que la nariz se incline.