A satellite with kinetic energy Ek is revolving round the earth in a circular orbit. How much more kinetic energy should be given to it so that it may just escape into outer space

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2 Ek

12Ek

3 Ek

answer is A.

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Detailed Solution

Binding energy = – kinetic energyAnd if this amount of energy (Ek) given to satellite then it will escape into outer space

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