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The Escape Velocity of a Body from the Surface of the Earth is 11.2 km/s. If a Satellite Were to Orbit Close to the Surface, What Would Be Its Critical Velocity? - Physics

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The escape velocity of a body from the surface of the earth is 11.2 km/s. If a satellite were to orbit close to the surface, what would be its critical velocity?

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Solution

Escape velocity of body from the surface of the earth = 11.2 km/s

`v_e=sqrt2v_0`

`v_0=v_e/sqrt2`

`v_0=(11.2xx10^3)/1.414`

v0 = 7.92×103 m/s or  7.92 km/s

Concept: Binding Energy and Escape Velocity of a Satellite
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