Rotation of the Earth

Calculate the circumferential speed of the Earth's surface at a latitude of 61°​​. Consider a globe with a radius of 6378 km.

Correct answer:

peripheral speed:  224.9 m/s

Step-by-step explanation:

$v={\displaystyle \frac{2\cdot 6378\pi }{24\cdot 3.6}}\cos 61^{\circ }=224.9\text{ m/s}$

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