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19 Οκτ 2023 · If we move halfway up the globe to 45 degrees in latitude (either north or south), you calculate the speed by using the cosine (a trigonometric function) of the latitude.
- The Speed of Light
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- The Speed of Light
4 Σεπ 2016 · How can one calculate the speed of rotation of a point on the Earth's surface about the Earth's axis, given only a latitude? While the simplest approach might be to assume the Earth is a sphere and it rotates once per day, it's rotation isn't exactly 24 hours, and the Earth is definitely not exactly a sphere!
The Earth is our most intimate frame of reference. It rotates eastward at the pace of one full turn every 23 hours and 56 minutes. At the equator, this spin causes the surface to spin at around 1,600 kilometres per hour! That's the speed of a bullet discharged!
22 Σεπ 2004 · The reduction of effective gravity by the Earth's rotation One important rotating frame is the surface of the Earth, rotating with a period of about 24 hours--more accurately, 23 hrs 56.07 min or 86164 seconds. If the equatorial radius of Earth is 6378 kilometers, the circumference comes to 40074 kilometers--slightly more than the 40,000 ...
The tangential speed of Earth's rotation at a point on Earth can be approximated by multiplying the speed at the equator by the cosine of the latitude. [42] For example, the Kennedy Space Center is located at latitude 28.59° N, which yields a speed of: cos(28.59°) × 1,674.4 km/h = 1,470.2 km/h.
We need only two values to calculate the rotational speed of the Earth at its equator (0 degrees latitude). The first value is the Earth's equatorial radius, which can easily be obtained from the astronomy texts or the internet:
26 Οκτ 1998 · The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers.
