#### Question

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?

#### 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`

v_{0} = 7.92×10^{3} m/s or 7.92 km/s

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#### APPEARS IN

Solution 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? Concept: Binding Energy and Escape Velocity of a Satellite.