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SVTPerformance's Chain of Restaurants
Road Side Pub
What is spacetime?
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<blockquote data-quote="James Snover" data-source="post: 16605888" data-attributes="member: 67454"><p>Dosen't feel or experience centrifugal force, at all. Because centrifugal force is not a factor in Earth's, or any other orbiting body's, orbit. Nothing in orbit around another body feels centrifugal force. Because the bodies themselves aren't traveling in a curve; it is the space itself that is curved. Curved by the mass of the two bodies. Mass/energy curves space, space tells mass/energy how to move.</p><p></p><p>Think of it like this: tie a baseball on a six foot string, dunk it in water, and spin it around your head. That is centrifugal force. For a very a small body, moving at far less than a 100mph. It's a pretty considerable amount of force. Enough to throw off any water remaining on the baseball.</p><p></p><p>The Earth is orbiting the sun at a distance of 93,000,000 miles, at a speed of 67,000mph. If it were affected by centrifugal force, there wouldn't be anything on it, everything would have been flung off, including the atmosphere, oceans, and us. In fact the planet would most likely crumble and break up from that much angular momentum.</p><p></p><p>Ironically, though, we do feel centrifugal force, due to Earth's rotation. And it's worth about five pounds. Stand at either pole, and you'll be about five pounds heavier than if you were at the equator. Thanks to the Earth's 1,000mph average rotational speed.</p></blockquote><p></p>
[QUOTE="James Snover, post: 16605888, member: 67454"] Dosen't feel or experience centrifugal force, at all. Because centrifugal force is not a factor in Earth's, or any other orbiting body's, orbit. Nothing in orbit around another body feels centrifugal force. Because the bodies themselves aren't traveling in a curve; it is the space itself that is curved. Curved by the mass of the two bodies. Mass/energy curves space, space tells mass/energy how to move. Think of it like this: tie a baseball on a six foot string, dunk it in water, and spin it around your head. That is centrifugal force. For a very a small body, moving at far less than a 100mph. It's a pretty considerable amount of force. Enough to throw off any water remaining on the baseball. The Earth is orbiting the sun at a distance of 93,000,000 miles, at a speed of 67,000mph. If it were affected by centrifugal force, there wouldn't be anything on it, everything would have been flung off, including the atmosphere, oceans, and us. In fact the planet would most likely crumble and break up from that much angular momentum. Ironically, though, we do feel centrifugal force, due to Earth's rotation. And it's worth about five pounds. Stand at either pole, and you'll be about five pounds heavier than if you were at the equator. Thanks to the Earth's 1,000mph average rotational speed. [/QUOTE]
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What is spacetime?
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