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Question

What is meant by escape velocity? Write the relation between escape velocity and orbital velocity.

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Solution

Escape velocity is the lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.
The relation between escape velocity and orbital velocity is given by Ve = 2Vo where Ve is the escape velocity and Vo is the orbital velocity. Thus the escape velocity is root-two times the orbital velocity.


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