[" A satellite whose mass is "M," is revolving "],[" in circular orbit of radius "r" around the "],[" earth.Time of revolution of satellite is "],[[" (1) "Ta(r^(5))/(GM)," (2) "Ta sqrt((r^(5))/(GM))],[" (3) "Ta sqrt((r)/(GM^(2)/3))," (4) "Ta sqrt((r^(3))/(GM/4))]]