An artificial satellite is moving in a circular orbit of radius 36,000 km. Calculate its speed if it takes 24 hours to revolve around the earth.

Radius of the circular orbit $r=36,000\ km$

Time taken $t=24\ h$

Therefore, the speed of the satellite $=\frac{distance\ travelled}{time}$

$=\frac{circumference\ of \ the\ circular\ orbit}{time}$

$=\frac{2\pi r}{t}$

$=\frac{2\times\frac{22}{7}\times36,000}{24}$

$=\frac{226285.7}{24}$

$=9428.57\ kmh^{-1}$

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Updated on: 10-Oct-2022

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