Gyroscope Experiment
A gyroscope is a spinning wheel or rotor mounted so it can freely rotate in one or more directions. When set in motion, it demonstrates some of the most striking principles of rotational dynamics:
Setup
A gyroscope is mounted on gimbals or held by a string/axle so that it can pivot freely.
The rotor is spun rapidly, either by hand, with a motor, or using a string pull.
Observation
When the rotor spins, the gyroscope resists changes in the direction of its axis.
If you try to tilt it, instead of falling, the gyroscope’s axis shifts sideways in a motion called precession.
For example, when one end is supported and gravity pulls down on the other, instead of tipping, the gyroscope turns at a right angle to the applied torque.
Explanation
This behavior arises because of conservation of angular momentum.
The spinning wheel stores angular momentum, and any torque applied doesn’t simply topple it but redirects its axis, causing the precession.
The faster the spin, the greater the stability — which is why gyroscopes are used in navigation systems, spacecraft, and airplanes.
✨ In simple terms: A gyroscope stays upright and turns in unexpected directions because a spinning object resists changes to its motion. Instead of falling, it “dances” around the force of gravity.