You can learn more about gyroscopic motion here. This article focuses on the generation of spin on a tennis ball, how to maximize the power of a shot, and finding the sweet spot on. But it all becomes much simpler when you understand the physics behind tennis. It contains an interesting demo using a spinning bicycle wheel: The shots of a professional tennis player may look like magic, seemingly defying the laws of science before your eyes. This comes from the tendency for a spinning object to want to keep spinning in the same direction.īelow is a video from Veritasium explaining the unique phenomenon of gyroscopic motion and precession. Researchers detected the effect of rotating a crystal on the spin of an embedded particle, a result that could lead to ultrasensitive rotation sensors. Additionally, gyroscopic motion can cause catastrophic failure in wind turbines. The inclined Ca II emissions indicate in themselves rotation, probably of a tube-shaped object with the axis of rotation more or less perpendicular to the slit. Gyroscopic motion can create problems with flywheels. Gyroscopic motion is used in inertial navigation systems with airplanes and space ships. This same physics is part of why bicycles stay upright (and why people need to lean to turn a bicycle, see hyperphysics). The Earth also has gyroscopic motion (and has wobbles leading to Milankovitch cycles. The faster the top spins the more likely it is to stay upright, and it will wobble while it spins. This idea is most obvious when playing with a top. The object will resist any change in its axis of rotation, as a change in orientation will result in a change in angular momentum. A rotating object possesses angular momentum and this momentum must be conserved. Gyroscopic motion is the tendency of a rotating object to maintain the orientation of its rotation. A rotating gyroscope, with the angular momentum vector pointing upwards, exhibits gyroscopic motion as it resists falling over.
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