31 questions · self-marked practice — reveal the answer and mark yourself.
where,
m: mass of the satellite
υc: critical velocity of the satellite
h: height of the satellite from the surface of the earth
M: mass of the earth
R: radius of the earth
G: gravitational constant
$\begin{aligned} & \therefore v_{ c }^2=\frac{G M}{R+h} \\ & \therefore v_{ c }=\sqrt{\frac{G M}{R+h}}\end{aligned}$
Thus, if the value of h changes, the value of υc also changes. It means a satellite needs to be given a specific velocity (in the tangential direction) to keep it revolving in a specific orbit.