At what speed does an artificial earth satellite move at a height of 2 earth radii from the surface?

To find out the speed of the presented artificial satellite, consider the formula: Vis = √ (G * MЗ / (RЗ + hс)), where G is the gravitational constant (const; G ≈ 6.674 * 10-11 m2 / (s2 * kg)); MЗ is the mass of the Earth (const; MЗ = 5.973 * 10 ^ 24 kg); RЗ – radius of the Earth (const; average RЗ = 6371 * 10 ^ 3 m); his – the height of the artificial satellite (his = 2RЗ).

Let’s perform the calculation: Vis = √ (G * MЗ / (RЗ + hс)) = √ (G * MЗ / 3R ^ З) = √ (6.674 * 10 ^ -11 * 5.973 * 10 ^ 24 / (3 * 6371 * 10 ^ 3)) ≈ 4566.9 m / s.

Answer: The speed of the presented artificial satellite is 4566.9 m / s.