If the period of revolution of an artificial satellite just above the earth's surface is T and the density of earth is ρ, then ρT2 is
Here, G = universal gravitation constant
Time period of a satellite above the earth's surface is :
T2=4π2R3GM=3πG⎛⎜⎝M43πR3⎞⎟⎠=3πGρ
or ρT2=3πG = a universal constant.