I have an interesting idea for an energy generator and I want to see what you think.
Basically, you take a small planet and drill from one side to the other so it looks like a sphere intersected with a tube going straight through it.
You then place coils along the inside of the tube which are then connected to batteries.
After that, you drop magnets down the shaft and as they fall through the coils they create electricity.
The magnet would eventually settle in the center of the planet, but before it does so it would travel (hopefully) many times from one end of the planet to the other, in a spring-like motion
So what do you think? How feasible is it?
I should have phrased it better. I didn't mean how feasible it would be to drill the hole, or to keep the planet from collapsing in under such high gravity. I just wanted to know if you could get any decent amount of energy from the dropping itself.