Question

define critical velocity of a satellite and obtain the expression for it

Answer 1

Answer:

Explanation:

Consider a satellite of mass m revolving round the earth of height h above the surface of the earth let m be the mass and R be the radius of earth. The satellite is moving with velocity Vc and the radius of circular orbit is r=R+h

Centrifetal force = gravitational Force

Mv^2c/r=GMm/r^2

V^2c=gm+r

Vc=√Gm/R+h ----- 1

gh=GM/(r+h)^2

GM=gh(R+h)^2

Sub in 1

Vc=√gh(R+h)

Answer 2

Answer:

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