A flywheel is a mechanical device that stores rotational energy. It consists of a wheel or disc that is typically made from a dense material and is mounted on a shaft, allowing it to spin. The primary functions of a flywheel include: 1. **Energy Storage**: Flywheels can store kinetic energy when they are accelerated and then release that energy when needed. This makes them useful for applications requiring energy buffering, such as in engines, electric vehicles, and renewable energy systems.
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