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為什麼重力隨緯度的增大而增大?
Aug 23rd 2013, 07:00

1、根據萬有引力的公式可知：半徑越小，萬有引力越大。
地球是個兩極稍扁，赤道略鼓橢球體，兩極的半徑小於赤道的半徑，因而隨著緯度增大，球面半徑減小，萬有引力增大，重力就增大。
2、重力只是萬有引力的一個分力，而另一個分力提供物體隨地球轉動所需要的向心力，緯度增大，傳動的半徑減小，在角速度相同的條件下，向心力減小，重力就隨著緯度升高而增大了

參考資料： 網路

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