How does the GyroBall work?
The GyroBall works without batteries! It is driven by pure muscle power. Inside the device, you’ll find a 200 gram rotor – the heart of the GyroBall. Once it’s set into motion, a rotation impulse starts up around the axis. Bike riders are familiar with this kind of impulse. If you get on a bike that’s not moving, you’ll fall over. But the faster you ride, the more stable the bike becomes. As speed increases, more power is required to steer. The rotor within the GyroBall is able to build up stability in exactly the same way – through the moment of inertia (the gyrating mass is about 2 cm (1/2 inch) from the axis) and the rotation speed. The user can now try to tilt the rotor, while simultaneously turning the rotation axis, to create a moment when the rotor begins turning. The gyroscope reacts to this movement with an opposite motion in an attempt to straighten upright again. This force is known as “precession”. GyroBall builds strength! This unique gyro exerciser helps build upper body
