Flywheel

A flywheel is a round, heavy thing that can spin around and around like a big top. Just like how a top keeps spinning once you’ve spun it, a flywheel can keep spinning for a long time once you’ve given it a push or a spin.

Flywheels are used in all sorts of machines, like cars, trains, and even some toys. They can do different things depending on the machine, but they’re usually used to store energy.

Imagine you’re playing with a toy car that has a flywheel inside. When you wind up the car and let it go, the flywheel starts spinning very fast. This spinning motion actually stores energy, kind of like how you store energy when you wind up a toy car.

Now imagine that instead of a toy car, you have a bigger machine like a train. The train can use flywheels to store energy too, but instead of winding them up, they might use them to store energy that comes from braking. When the train needs to slow down or stop, the brakes slow down the train, but they also generate a lot of energy. Instead of wasting that energy, the train can use it to spin the flywheel and store it for later. Then, when the train needs to speed up again, it can use the stored energy from the flywheel to do so.

So, in summary, a flywheel is a spinning mechanism that can be used to store energy and release it later. It’s kind of like a battery, but it works by spinning around instead of holding an electric charge.