The flat earth model is the most commonly used one.
To be more precise, the most common model of the earth is a not accelerating surface, which is in average flat, with a constant gravity, indepent of position and height.
DareToSayIT · 31-35, M
Gravity changes with height, depth as well as your coordinates, but for the sake of solving school problems it’s considered constant. If you are launching a rocket, you have to factor everything in.
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DareToSayIT · 31-35, M
@Luke73 as I said, its load. Mass x gravity. Force is what considered in construction, not mass. Whether you balance the beams or you build a structure you do resolution of forces. 9.81 is fairly accurate for anything you build on earth, but it’s not a standardized constant for things that needs precise calculations up to 10th decimal point. If you launch spacecraft with that calculation it will never reach the destination.
Luke73 · 26-30, M
@DareToSayIT I'm not speaking about space travel. And even there you don't have calculations up to the 10th decimal point precise, there are too many factors that you don't know exactly enough.
And load is not mass times gravity. Gravity is not a unit or anything. Force is mass times acceleration.
And load is not mass times gravity. Gravity is not a unit or anything. Force is mass times acceleration.
DareToSayIT · 31-35, M
@Luke73 You been using the world “gravity” and “acceleration due to gravity” interchangeably. Hence I was speaking to you in your own language. You seem like you have no idea what you are yapping about.
Sidewinder · 36-40, M
I'm not a flat-earther.
Luke73 · 26-30, M
@Sidewinder Me either but this post is still true.