Given that the earth's rotation has been slowing down by very slight amounts over time, forcing us to introduce leap seconds and so forth into our clocks and calendars, I would like to ask if this could be fixed by "generating" more spin via some sort of power plant like structure(s) with a massive spinning object. (would it be ideal for these to be on the equator?)
How much energy would be needed in order to change the length of a year by 1 second?
what about in order to eliminate February 29th such that we don't need a "leap day" anymore? (24 hours over 4 years) - note that for this, the spin would need to be altered such that the day is removed, but then returned to near its original state such that we don't keep losing days
related Q/A: the earth IS slowing down (rotationally)