My kid has this toy car and it doesn’t take batteries, it just takes a small push and can go really far and take a lot of obstacles. Inside there are a bunch of gears that seem to propel the car, but in terms of conservation of momentum and energy, I don’t get how it can go so well. how this works? (I do have a 5 yo but she doesn’t care as much as I do about getting a correct answer.)
In: Engineering
Inertia. There is a flywheel that is big and heavy and has a very small gear inside in comparison to others. This flywheel stores the energy and with the torque multiplication of the gears is able to push the car.
It’s actually quite smart. I love tinkering with toys since I was 5 yrs old. These little machines are highly creative and they put them in a lot of things not just toys.
The same principle applies to engines in cars specially manual cars. Big heavy flywheels for almost the same purpose. Hmmmmm
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