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离心力对重力矢量的影响?

我现在问这个问题两次从我们最喜欢科学否认社区,我不知道如何解析它。我可以做离心力和重力给定质量,但从来没有试图甚至是否应该有重力的挠度由于离心力在给定的纬度。

我猜我正在出售一座桥与他的数字,但不能肯定。

这是他给我的号码:

引力(m / s ^ 2) = 9.80576
纬度(度)= 45
速度(英里/小时)= 735.64
离心力(m / s ^ 2) = 0.0239809
重力方向向量= (0.707107,0.707107)
离心力方向向量= (1,0)
结合力量= (-6.90974,-6.93372)
结合部队(相对于地面)= (0.016957,-9.7888)
减肥比北极= 0.172929 (%)
弹掉(时间= 4.51秒)
偏转南(cm) = 17.2454
落差100米。
怎么我反复检查他告诉我什么呢?我将试图在欧美分享答案作为参考来处理这个所谓的“问题!”
从他提供的CF,我估计物体的表面会有质量(从CalcTools) 712克、漂移和17厘米的100下降的质量似乎是他的10倍(从实例在不同的背阔肌)。

https://www.youtube.com/channel/UCHZ2fjTguMMT0EDGSCcPoEw

回答

>我猜我正在出售一座桥与他的数字,但不能肯定。你正在出售一个桥和他的号码。如果他做了正确的数学,他将获得33.58厘米的偏转45°地心纬度而不是17.245厘米。youtube的评论显示的错误数量。两个关键错误的评论者假设——当地垂直分直接向地球的中心。——重力加速度由于地球质量分在同一个方向。那些youtube评论所显示的是,地球是不一个球体。近距离逼近是一个扁球。也就是说,他的言论时间差落入错误的类别。引用艾萨克·阿西莫夫,>当人们以为地球是平的,他们错了。 When people thought the Earth was spherical, they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together. Note that I qualified latitude in the above as geocentric. Geodesists have multiple concepts of latitude. Geocentric latitude is the angle between a line to the center of the Earth and the Earth's equatorial plane. Geodetic latitude is the angle between the normal to the reference ellipsoid and the Earth's equatorial plane. Yet another concept is astronomical latitude, which is the angle between true vertical and the Earth's equatorial plane. The difference between geocentric and geodetic latitude is at its greatest at 45°. A geocentric latitude of 45° is equivalent to a geodetic latitude of 45° 11' 32.7". Converting that 11' 32.7" difference to radians and multiplying by 100 meters results in 33.58 cm. The difference between geodetic and astronomical latitude is called the deflection of the vertical (or vertical deflection). The deflection of the vertical is rather small, less than 2' (two minutes of arc) even in extremely mountainous terrain. Typical values are a few tens of arc seconds. What this means is that an oblate spheroid is a better model of the Earth's shape than a sphere. That does not mean a flat Earth model is correct. The Earth's flattening (how squished the Earth is at the poles versus the at the equator) is rather small. The poles are 22 km closer to the center of the Earth than is the equator. Percentage-wise, that's a 0.345% difference. The reason an oblate spheroid is a better model of the Earth's shape than a sphere is because the Earth is spinning. That spin does two things: It results in a centrifugal acceleration from the perspective of an observer fixed with respect to the rotating Earth, and it results in an equatorial bulge. If the Earth was a uniform density liquid, the spin would make the Earth naturally relax into an oblate spheroidal shape. "Straight down", the combined effects of gravitational and centrifugal acceleration (geodesists call this "gravity" to distinguish it from gravitation) would be exactly normal to the surface.

编辑总结

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\ begingroup美元《旅,我震惊了,这是17或34厘米下降100。我期望一个答案在毫米。但是我准备接受我的直觉是错的:-) \ endgroup美元
- - - - - -半日西蒙
2019年10月1日在十五11
\ begingroup美元 @SemidiurnalSimon——这是一个坏的结果的定义“向下”(或“向上”)。不是向地球的中心。这是地心引力的方向。“向下”和“对地球的中心”是在其最大45°纬度。除了少数地区(例如,喜马拉雅山脉的地区),“向下”的区别和内在的正常参考椭球体结束超过一个数量级小于地心和大地纬度之间的区别。 \ endgroup美元
- - - - - -大卫Hammen
2019年10月1日在33
\ begingroup美元是的,我理解的机制——我解释了它在我自己的评论(虽然少技术语言,因为我不是一个测量技师)。我只是惊讶,太大的影响。这是所有。 \ endgroup美元
- - - - - -半日西蒙
2019年10月1日在38
\ begingroup美元谢谢。尽管这个问题的来源,这是一个很好的学习机会。 \ endgroup美元
- - - - - -拉斯•沃克
2019年10月2日在5:45

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