Flywheels are only high speed when they are not doing any work.
As soon as they start doing work, they slow down.
Flywheels are different from positive feedback loops, which is what people usually mean when they talk about flywheels.
A flywheel is just a rotational store of energy. It's not. Usefully different from lifting a heavy weight via a pulley, and then releasing it a bit when you need to use it lift something else.
It performs the same function as a chargeable electric battery.
As soon as they start doing work, they slow down.
Flywheels are different from positive feedback loops, which is what people usually mean when they talk about flywheels.
A flywheel is just a rotational store of energy. It's not. Usefully different from lifting a heavy weight via a pulley, and then releasing it a bit when you need to use it lift something else. It performs the same function as a chargeable electric battery.