A body is orbiting very close to the earth's surface with kinetic energy K . The energy required to completely escape from it is

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TestHub · Accepted Answer

For a satellite in a closed orbit, we know that $T . E . = \frac{P . E .}{2} = - K . E .$

Hence, in order to make the body escape, we should make its total energy $0$ , which can be achieved by providing additional energy equal to the kinetic energy of the body itself as from the abiove relation we can clearly see that $T . E . = - K . E .$ .

So, the energy given to the body so as to completely escape from its orbit is equal to its kinetic energy $K$ .

Physics - Gravitation Question with Solution | TestHub

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