Question

Expression
Critical velocity of satellite....
STD:12

Answer 1

Hi friend here is your answer

_______________________________________

Consider a satellite of mass m orbiting around around earth at height h let Vc be the velocity of the satellite

Therefore radius of orbit is (R+h)

Let

M = Mass of the earth
R = Radius of the earth

So for circular motion the necessary centripetal force is provided by gravitational force of attraction between satellite and earth

Hence

Centripetal = gravitational
Force Force

MVc^2/(R+h) = GMm/R+h) ^2

Vc = root of GM/(R+h)

For low altitude R >> h

So neglecting h

Vc = root of GM/R

_______________________

Hope it helps you...........!!
#TheUsos
Down Since
Day One Ish