Gravity earth's radius question

  • #1

Homework Statement


The force of gravity on an astronaut is 600N at the earth's surface. what is the force of gravity acting on him at a distance of 10 times the earth's radius?



Homework Equations


F = Fm1m2/r^2


The Attempt at a Solution


F = Gm1m2/r^2
F = 600/11r^2
F = 4.96N

11r because its measured from the surface of the earth
 

Answers and Replies

  • #2
648
2
I think it means at a distance of 10 times R from the centre of the Earth. (not from the surface)
 

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