Originally posted by xXHardyKingXx
I would assume that the Earth now weighs much more due to the massive exponential growth of humanity that has happened.
READ! The law of conservation of mass states that matter is neither made nor destroyed, meaning, in a closed system, no additional mass can be created. Which in turn means that in and of itself, humanity can have no bearing on the weight of the earth.
---------- Post added at 07:59 PM ---------- Previous post was at 07:35 PM ----------
Wait, I just realized, this is a trick question...
The earth can't "weigh" more or less, because the earth can't "weigh" at all. It's weight is 0. By definition, an object's weight is the mass of an object multiplied by the acceleration it's experiencing. (
w=
ma) So, we would be taking an object's mass times the acceleration of gravity on earth. However, the earth has gravity acting upon it in all directions (which is the gravity we've come to know and love) and therefore cannot accelerate, meaning it's acceleration is 0. Anything times 0 = 0 meaning that earth's weight is 0.
tl;dr: semantics, condescending explanation, Earth has no weight