The orbital velocity of an artificial satellite in a circular

The velocity of the satellite

V=√(GM/(R+h)) where G is the gravitational constant M is the mass of earth,R is the radius.h is the height of the satellite.

As the satellite is above the earth surfaceh=0

V=√(GM/R)

When the satellite is orbiting at a height h=R/2

V=√(GM/(R+R/2))

⇒V_ =√(2GM/3R)

⇒V_ =√(2/3) v₀