Find the ratio of the orbital speeds to two satellites of the earth if the satellites are at height 6400 km and 19200 km. (Radius of the earth = 6400 km).

Find the ratio of the orbital speeds to two satellites of the earth if

1.	Find the ratio of the orbital speeds to two satellites of the earth if the satellites are at height 6400 km and 19200 km. (Radius of the earth = 6400 km).
Answer» SOLUTION :Orbital SPEED `V_(0) = sqrt((GM)/(R+h))` The ratio of the orbital speeds of two satellites around the earth is `(V_(01))/(V_(02)) = sqrt((R+h_(2))/(R+h_(1)))` Where `h_(1)` and `h_(2)` are the heights of the satellites In this problem `h_(1) = 6400 km, h_(2) = 19200 km, R = 6400 km`. `(V_(01))/(V_(02)) = sqrt((6400)/(12800)) = sqrt((25600)/(12800)) = (sqrt(2))/(1)`