Would a huge amount of asteroids hitting Earth change its rotation speed or destroy the planet?
He concludes that the only "solution" would be to hit Earth with asteroids - lots of them. He gives 2 options: one with big asteroids and another with smaller ones.
To get enough spin, we have to hit the Earth with on the order of a billion liters of rock per second (several times the volumetric discharge rate of the Amazon). This adds up to about one six-mile dinosaur-killing asteroid every couple days.
If asteroid B-612 in The Little Prince is four meters across and made of rock, we’d need an average of around fifty thousand of them to enter the atmosphere each second to keep up the pressure.
I didn't check the math - although I really trust Munroe on these things - but my question is: would this ridiculous amount of asteroids continuously hitting the planet end up destroying it before accelerating its rotation? And when I say "destroy", I'm not talking only about life forms ceasing to exist, but the planet itself exploding into pieces.
Or would Earth just "lose some pieces" but continue to rotate as nothing - or almost nothing - happened?