Question

Q1 - Derive a formula for ‘Critical Velocity’ for the launching of a

space craft in outer space, using the Newton’s law of gravitation.




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Answer 1

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Consider a satellite of mass m revolving round the Earth at a, height 'h' above the surface of the Earth.

Let M be the mass and R be the radius of the Earth.

The satellite is moving with velocity V and the radius of the circular orbit is r=R+h.

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