>> “ I would imagine it could probably be calculated how much rotational energy Io steals from Jupiter with each orbit.” <<
.
Exactly as much as jupiter ‘steals’ back.
Exactly as much as jupiter ‘steals’ back.
Maybe, maybe not. I don't know enough about the orbital mechanics of the system, but it seems that at least some of the energy is being expended in flexing the moon enough to generate a substantial amount of heat, which I don't think Jupiter is capturing all of. Overall, it would be a net loss of rotational energy ftrom Jupiter. However, given Jupiter's size, I doubt it would be something to worry about except ni the ultra-long term, which, in the long run could possibly be leavened with the possibilty of the moon eventually spiraling in (similar to what appears to be happening with Mars' moons), or moving far enough away to be eventually lost, like what appears to be happening to our moon.
It's not my field, so I don't really know the ultimate fate of the moon (if it can even be calculated given how complex the system is), but I know enough to make SWAGs about it on the internet. :-)