Question

An artificial satellite moving in a circular orbit of radius 51385 km.

calculate its speed if it takes 24 hours to revolve round the earth.​

Answer 1

speed = 2πr/t

2 ×3.14× 51385/24

13445.7 km/hr

Hope you understood

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Answer 2

Given that -

The radius of the orbit = 51385 km

To find out -

Speed if it takes 24 hours to revolve around the earth

Solution -

Circumference of the orbit = 2πr² = 2×3.14×51385 = 322,697.8 km

Time taken for the orbit = 24 hours

Therefore, speed of the satellite = 13445.741 km.h-1 (approx.)

The satellite orbits the Earth at a speed of 11065.4 kilometers per hour.