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The gravitational potential energy of sa...

The gravitational potential energy of satellite revolving around the earth in circular orbit is `4MJ`. Find the additional energy (in `MJ`) that should be given to the satellite so that it escape from the gravitational field of the earth.

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The correct Answer is:
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`PE=-4MJ TE=-2MJ` The additional energy required to make the satellite escape `=+2MJ`.
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