Earth and Weight Differences ```Name: Charles Status: N/A Age: 60s Location: N/A Country: N/A Date: 2000-2001 ``` Question: Due to centrifugal force induced by the earth's rotation, would a person weigh less, standing at the equator North or South Poles? Replies: Yes, around 3% less. Tim Mooney Because of the Earth's rotation it is not a perfect sphere, but described as an oblate spheroid. The Earth is slightly flattened at the poles and slightly bulged at the equator. Therefore, a person standing at the equator would weigh slightly less than at either of the Poles. The weight difference however is not very significant, only about 0.3%, because the distance from the Earth's center is only slightly different. Steve Miller Yes. The effect is small, but real. Barrans A person who is standing on a mountain top will weigh less than a person standing at sea level (or below), however, Earths gravity is equal all around, since it is nearly circular. The rotation of the earth cannot be detected('felt') by us, nor can it be detected by a scale. Katie Page Click here to return to the Physics Archives

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