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Message: <blockquote data-quote="AN2" data-source="post: 143953" data-attributes="member: 3556">Gravity isn't a force <img class="smilie smilie--emoji" loading="lazy" alt="🤔" title="Thinking face    :thinking:" src="https://cdn.jsdelivr.net/joypixels/assets/6.5/png/unicode/64/1f914.png" data-shortname=":thinking:" />I hope you got a good idea about gravity (bendy spacetime) there HermitBut you may still be asking yourself some (very good) fundamental questions..If gravity isn't a force, why does it manifest as an acceleration?Well, first of all, if a man jumps off a tall building with an accelerometer attached, the accelerometer won't measure any acceleration (until he goes splat), similarly, if a man jumps off a tall building with a weighing scales velcroed to his feet, the weighing scales won't measure any weight, these ideas are referred to as "Einstein's happiest thought" (the death of a man falling off a tall building)But sure, we see objects that are falling accelerate towards the Earth (or is it the other way around?), that's just a fact.So, what happens in gravitational field is that objects follow what's called a geodesic, which is a straight line, i.e. the shortest path from A to B, and as the object falls (towards the centre of gravity), this path from A to B shortens, resulting in an observed acceleration. That's how I think about it anyway (other people may think that that's a stupid answer)Another question you may ask..If gravity isn't a force, what gets the apple moving? Well, I think an answer to that is time. All objects move through space and time, with one affecting the other, whether at rest or in motion. If after you let go of the apple and it wasn't to fall, time itself would have to have stopped.Anyway, that's how I answer these fundamental questions to myself, better or any other answers than mine are always welcome, as are any questions..Your humble servant,SS (Science Supplier)</blockquote>

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