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Apocalypse, End Times, Disasters & Survivalism
The World Ends With a Tasteful Announcement
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<blockquote data-quote="Peregrini" data-source="post: 51280" data-attributes="member: 2670"><p>You're not wrong but the difference is minimal.</p><p> </p><p><span style="color: #ffcc00">At latitudes nearer the Equator, the inertia produced by Earth's rotation is stronger than at polar latitudes. This counteracts the Earth's gravity to a small degree – up to a maximum of 0.3% at the Equator – reducing the downward acceleration of falling objects.</span></p><p> </p><p>Basically an object falling at the poles at 100m/s would fall at 99.7m/s at the equator or if at 100m/s at the equator it would fall at 100.3m/s at the poles. If the earth wasn't spinning it would be 100m/s either place. That is if I have it right. There are others here who could give you a more detailed answer. Perhaps someone will.</p><p> </p><p>The second major cause for the difference in gravity at different latitudes is that the Earth's equatorial bulge (itself also caused by inertia) causes objects at the Equator to be farther from the planet's centre than objects at the poles. Because the force due to gravitational attraction between two bodies (the Earth and the object being weighed) varies inversely with the square of the distance between them, an object at the Equator experiences a weaker gravitational pull than an object at the poles.</p><p> </p><p>In combination, the equatorial bulge and the effects of the Earth's inertia mean that sea-level gravitational acceleration increases from about 9.780 m·s−2 at the Equator to about 9.832 m·s−2 at the poles, so an object will weigh about 0.5% more at the poles than at the Equator.[3][4]</p><p> </p><p>The same two factors influence the direction of the effective gravity. Anywhere on Earth away from the Equator or poles, effective gravity points not exactly toward the centre of the Earth, but rather perpendicular to the surface of the geoid, which, due to the flattened shape of the Earth, is somewhat toward the opposite pole. About half of the deflection is due to inertia, and half because the extra mass around the Equator causes a change in the direction of the true gravitational force relative to what it would be on a spherical Earth.</p><p><a href="http://en.wikipedia.org/wiki/Gravity_of_Earth" target="_blank">http://en.wikipedia.org/wiki/Gravity_of_Earth</a></p></blockquote><p></p>
[QUOTE="Peregrini, post: 51280, member: 2670"] You're not wrong but the difference is minimal. [COLOR=#ffcc00]At latitudes nearer the Equator, the inertia produced by Earth's rotation is stronger than at polar latitudes. This counteracts the Earth's gravity to a small degree – up to a maximum of 0.3% at the Equator – reducing the downward acceleration of falling objects.[/COLOR] Basically an object falling at the poles at 100m/s would fall at 99.7m/s at the equator or if at 100m/s at the equator it would fall at 100.3m/s at the poles. If the earth wasn't spinning it would be 100m/s either place. That is if I have it right. There are others here who could give you a more detailed answer. Perhaps someone will. The second major cause for the difference in gravity at different latitudes is that the Earth's equatorial bulge (itself also caused by inertia) causes objects at the Equator to be farther from the planet's centre than objects at the poles. Because the force due to gravitational attraction between two bodies (the Earth and the object being weighed) varies inversely with the square of the distance between them, an object at the Equator experiences a weaker gravitational pull than an object at the poles. In combination, the equatorial bulge and the effects of the Earth's inertia mean that sea-level gravitational acceleration increases from about 9.780 m·s−2 at the Equator to about 9.832 m·s−2 at the poles, so an object will weigh about 0.5% more at the poles than at the Equator.[3][4] The same two factors influence the direction of the effective gravity. Anywhere on Earth away from the Equator or poles, effective gravity points not exactly toward the centre of the Earth, but rather perpendicular to the surface of the geoid, which, due to the flattened shape of the Earth, is somewhat toward the opposite pole. About half of the deflection is due to inertia, and half because the extra mass around the Equator causes a change in the direction of the true gravitational force relative to what it would be on a spherical Earth. [url]http://en.wikipedia.org/wiki/Gravity_of_Earth[/url] [/QUOTE]
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