Gyroscopic exercise tool

<p>A gyroscopic exercise tool is a specialized device used in <a href="/facts/Physical_therapy/q24XDqHF">physical therapy</a> to improve wrist strength and promote the development of palm, wrist, forearm, and finger muscles. It can also be used as a unique demonstration of some aspects of <a href="/facts/Dynamics_(physics)/JLk81H71">rotational dynamics</a>. The device consists of a <a href="/facts/Tennis_ball/JQnxpdPh">tennis ball</a>-sized plastic or metal shell surrounding a free-spinning mass, with an inner heavy core, which can be spun by a short rip string or using a self-start mechanism by means of rewinding it against a spring to give it <a href="/facts/Potential_energy/I03KLbmn">potential energy</a>. Once the <a href="/facts/Gyroscope/UjXGsfMq">gyroscope</a> inside is going fast enough, the person holding the device can accelerate the spinning mass to high rotation rates by moving the wrist in a circular motion. The force enacted on the user increases as the speed of the inner gyroscope increases.
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Gyroscopic exercise tool open-in-new

Gyroscopic exercise tool