# Newtons law of universal gravitational question

redruM
http://www.boredofstudies.org/community/attachment.php?s=&postid=266675 [Broken]

when doing this question, isn't the radius of the planet supposed to be added to the altitude of the satellite?
having said that, would the term 'orbit' mean that the satellite is 35 000km away from the centre of mass, ie the centre of the planet and hence the radius is already included?

thanks for any replies

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